In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
IntheLinuxkernel,thefollowingvulnerabilityhasbeenresolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In theLinux kernel,the followingvulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefaultxmit function ofthe AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with theoptionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be resetandremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330[ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name:QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe rootcause is: 1. packet_snd() only reset skb->mac_header whensock->typeis SOCK_RAW andskb->protocol isnot specified as in packet_parse_headers() 2. packet_direct_xmit()doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() withskb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicastto solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
IntheLinuxkernel,the followingvulnerabilityhas been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit functionof the AF_PACKETsocket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname ofPACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains asthe initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU StandardPC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1.packet_snd() only reset skb->mac_header when sock->type isSOCK_RAW and skb->protocolis not specifiedas in packet_parse_headers() 2. packet_direct_xmit() doesn t resetskb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr()in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve thisout-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn treset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head +skb->mac_header ,out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU:2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesnt reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header, out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel,the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs causedby unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() topacket_direct_xmit() via setsockopt() with the optionname ofPACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-boundsin ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_sendKdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd()onlyreset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_headeras dev_queue_xmit()In thiscase, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head+ skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr()inipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
In the Linux kernel, the following vulnerability has been resolved:ipvlan: Fix out-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used to send packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset andremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header as dev_queue_xmit()In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicast to solve this out-of-bound bug.
| linux | | https://git.kernel.org/linus/81225b2ea161af48e093f58e8dfee6d705b16af4 | https://git.kernel.org/linus/2ad7bf3638411cb547f2823df08166c13ab04269 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
IntheLinuxkernel,thefollowingvulnerabilityhasbeenresolved:ipvlan: Fixout-of-bound bugs caused by unset skb->mac_headerIf an AF_PACKET socket is used tosend packets through ipvlan and thedefault xmit function of the AF_PACKET socket is changed fromdev_queue_xmit() to packet_direct_xmit() via setsockopt() with the optionnameof PACKET_QDISC_BYPASS, theskb->mac_header may not be resetandremains as the initial value of 65535, this may trigger slab-out-of-boundsbugs as following:=================================================================UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]PU: 2 PID: 1768Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6ardware name: QEMUStandard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33all Trace:print_address_description.constprop.0+0x1d/0x160print_report.cold+0x4f/0x112kasan_report+0xa3/0x130ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]ipvlan_start_xmit+0x29/0xa0 [ipvlan]__dev_direct_xmit+0x2e2/0x380packet_direct_xmit+0x22/0x60packet_snd+0x7c9/0xc40sock_sendmsg+0x9a/0xa0__sys_sendto+0x18a/0x230__x64_sys_sendto+0x74/0x90do_syscall_64+0x3b/0x90entry_SYSCALL_64_after_hwframe+0x63/0xcdThe root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW andskb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn t reset skb->mac_header asdev_queue_xmit()In this case, skb->mac_header is 65535when ipvlan_xmit_mode_l2()iscalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() whichuse skb->head + skb->mac_header , out-of-bound access occurs.This patchreplaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()and reset mac header in multicasttosolve this out-of-bound bug.
