In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
Inthe Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it's a union"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused -but note that it's aunion"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As aresult, move the length validation to the validation function.No regressions in MPLS tests: #./tdc.py -f tc-tests/actions/mpls.json [...] #echo $? 0[1]WARNING: CPU: 0PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused- but note that it'sa union"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().Asa result, move the length validation to the validation function.No regressions in MPLS tests:# ./tdc.py -f tc-tests/actions/mpls.json [...]# echo $? 0[1]WARNING: CPU:0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU:0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused- but note that it'sa union"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().Asa result, move the length validation to the validation function.No regressions in MPLS tests:# ./tdc.py -f tc-tests/actions/mpls.json [...]# echo $? 0[1]WARNING: CPU:0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU:0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused -but note that it's aunion"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As aresult, move the length validation to the validation function.No regressions in MPLS tests: #./tdc.py -f tc-tests/actions/mpls.json [...] #echo $? 0[1]WARNING: CPU: 0PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it's a union"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| linux | | https://git.kernel.org/linus/9e17f99220d111ea031b44153fdfe364b0024ff2 | https://git.kernel.org/linus/2a2ea50870baa3fb4de0872c5b60828138654ca7 | 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:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it's a union"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| linux | | https://git.kernel.org/linus/9e17f99220d111ea031b44153fdfe364b0024ff2 | https://git.kernel.org/linus/2a2ea50870baa3fb4de0872c5b60828138654ca7 | 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:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused -but note that it's aunion"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As aresult, move the length validation to the validation function.No regressions in MPLS tests: #./tdc.py -f tc-tests/actions/mpls.json [...] #echo $? 0[1]WARNING: CPU: 0PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| linux | | https://git.kernel.org/linus/9e17f99220d111ea031b44153fdfe364b0024ff2 | https://git.kernel.org/linus/2a2ea50870baa3fb4de0872c5b60828138654ca7 | 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:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused- but note that it'sa union"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().Asa result, move the length validation to the validation function.No regressions in MPLS tests:# ./tdc.py -f tc-tests/actions/mpls.json [...]# echo $? 0[1]WARNING: CPU:0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU:0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| linux | | https://git.kernel.org/linus/9e17f99220d111ea031b44153fdfe364b0024ff2 | https://git.kernel.org/linus/2a2ea50870baa3fb4de0872c5b60828138654ca7 | 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:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused -but note that it's aunion"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As aresult, move the length validation to the validation function.No regressions in MPLS tests: #./tdc.py -f tc-tests/actions/mpls.json [...] #echo $? 0[1]WARNING: CPU: 0PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| linux | | https://git.kernel.org/linus/9e17f99220d111ea031b44153fdfe364b0024ff2 | https://git.kernel.org/linus/2a2ea50870baa3fb4de0872c5b60828138654ca7 | 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:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused- but note that it'sa union"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().Asa result, move the length validation to the validation function.No regressions in MPLS tests:# ./tdc.py -f tc-tests/actions/mpls.json [...]# echo $? 0[1]WARNING: CPU:0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU:0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| linux | | https://git.kernel.org/linus/9e17f99220d111ea031b44153fdfe364b0024ff2 | https://git.kernel.org/linus/2a2ea50870baa3fb4de0872c5b60828138654ca7 | 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:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it's a union"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it's a union"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused -but note that it's aunion"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As aresult, move the length validation to the validation function.No regressions in MPLS tests: #./tdc.py -f tc-tests/actions/mpls.json [...] #echo $? 0[1]WARNING: CPU: 0PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused- but note that it'sa union"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().Asa result, move the length validation to the validation function.No regressions in MPLS tests:# ./tdc.py -f tc-tests/actions/mpls.json [...]# echo $? 0[1]WARNING: CPU:0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU:0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it's a union"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| linux | | https://git.kernel.org/linus/9e17f99220d111ea031b44153fdfe364b0024ff2 | https://git.kernel.org/linus/2a2ea50870baa3fb4de0872c5b60828138654ca7 | 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:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it's a union"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| linux | | https://git.kernel.org/linus/9e17f99220d111ea031b44153fdfe364b0024ff2 | https://git.kernel.org/linus/2a2ea50870baa3fb4de0872c5b60828138654ca7 | 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:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused -but note that it's aunion"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As aresult, move the length validation to the validation function.No regressions in MPLS tests: #./tdc.py -f tc-tests/actions/mpls.json [...] #echo $? 0[1]WARNING: CPU: 0PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| linux | | https://git.kernel.org/linus/9e17f99220d111ea031b44153fdfe364b0024ff2 | https://git.kernel.org/linus/2a2ea50870baa3fb4de0872c5b60828138654ca7 | 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:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused- but note that it'sa union"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().Asa result, move the length validation to the validation function.No regressions in MPLS tests:# ./tdc.py -f tc-tests/actions/mpls.json [...]# echo $? 0[1]WARNING: CPU:0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU:0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| linux | | https://git.kernel.org/linus/9e17f99220d111ea031b44153fdfe364b0024ff2 | https://git.kernel.org/linus/2a2ea50870baa3fb4de0872c5b60828138654ca7 | 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:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused -but note that it's aunion"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As aresult, move the length validation to the validation function.No regressions in MPLS tests: #./tdc.py -f tc-tests/actions/mpls.json [...] #echo $? 0[1]WARNING: CPU: 0PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| linux | | https://git.kernel.org/linus/9e17f99220d111ea031b44153fdfe364b0024ff2 | https://git.kernel.org/linus/2a2ea50870baa3fb4de0872c5b60828138654ca7 | 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:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused- but note that it'sa union"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().Asa result, move the length validation to the validation function.No regressions in MPLS tests:# ./tdc.py -f tc-tests/actions/mpls.json [...]# echo $? 0[1]WARNING: CPU:0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU:0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| linux | | https://git.kernel.org/linus/9e17f99220d111ea031b44153fdfe364b0024ff2 | https://git.kernel.org/linus/2a2ea50870baa3fb4de0872c5b60828138654ca7 | 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:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused -but note that it's aunion"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As aresult, move the length validation to the validation function.No regressions in MPLS tests: #./tdc.py -f tc-tests/actions/mpls.json [...] #echo $? 0[1]WARNING: CPU: 0PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| linux | | https://git.kernel.org/linus/9e17f99220d111ea031b44153fdfe364b0024ff2 | https://git.kernel.org/linus/2a2ea50870baa3fb4de0872c5b60828138654ca7 | 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:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused- but note that it'sa union"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().Asa result, move the length validation to the validation function.No regressions in MPLS tests:# ./tdc.py -f tc-tests/actions/mpls.json [...]# echo $? 0[1]WARNING: CPU:0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU:0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| linux | | https://git.kernel.org/linus/9e17f99220d111ea031b44153fdfe364b0024ff2 | https://git.kernel.org/linus/2a2ea50870baa3fb4de0872c5b60828138654ca7 | 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:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused -but note that it's aunion"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As aresult, move the length validation to the validation function.No regressions in MPLS tests: #./tdc.py -f tc-tests/actions/mpls.json [...] #echo $? 0[1]WARNING: CPU: 0PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| linux | | https://git.kernel.org/linus/9e17f99220d111ea031b44153fdfe364b0024ff2 | https://git.kernel.org/linus/2a2ea50870baa3fb4de0872c5b60828138654ca7 | 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:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused- but note that it'sa union"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().Asa result, move the length validation to the validation function.No regressions in MPLS tests:# ./tdc.py -f tc-tests/actions/mpls.json [...]# echo $? 0[1]WARNING: CPU:0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU:0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| linux | | https://git.kernel.org/linus/9e17f99220d111ea031b44153fdfe364b0024ff2 | https://git.kernel.org/linus/2a2ea50870baa3fb4de0872c5b60828138654ca7 | 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:net/sched:act_mpls: Fix warningduring failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32'type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN:NLA_BINARY Validation function called for the attribute.Allother Unused -but notethat it's a union"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation ofthe attribute fails.Despite being of 'NLA_U32' type,theassociated 'min'/'max'fieldsin the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above commentand all other users of NLA_POLICY_VALIDATE_FN().As a result, move the lengthvalidation to the validation function.No regressions inMPLS tests:# ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name:QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| linux | | https://git.kernel.org/linus/9e17f99220d111ea031b44153fdfe364b0024ff2 | https://git.kernel.org/linus/2a2ea50870baa3fb4de0872c5b60828138654ca7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
IntheLinuxkernel,the followingvulnerabilityhas been resolved:net/sched: act_mpls: Fixwarning during failedattribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but hasavalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validationfunction called for the attribute. All other Unused-butnote thatit'sa union"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attributefails. Despite beingof 'NLA_U32' type, theassociated'min'/'max' fields in thepolicyare negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all otherusers of NLA_POLICY_VALIDATE_FN().As a result, move the length validationtothe validation function.No regressions in MPLS tests: #./tdc.py -ftc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 atlib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU StandardPC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| linux | | https://git.kernel.org/linus/9e17f99220d111ea031b44153fdfe364b0024ff2 | https://git.kernel.org/linus/2a2ea50870baa3fb4de0872c5b60828138654ca7 | 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:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused -but note that it's aunion"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As aresult, move the length validation to the validation function.No regressions in MPLS tests: #./tdc.py -f tc-tests/actions/mpls.json [...] #echo $? 0[1]WARNING: CPU: 0PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX +PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mpls: Fix warning during failed attribute validationThe TCA_MPLS_LABEL attribute is of NLA_U32 type, but has avalidation type of NLA_VALIDATE_FUNCTION . This is an invalidcombination according to the comment above struct nla_policy : Meaning of `validate field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused - but note that it s a union This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of NLA_U32 type, theassociated min / max fields in the policy are negative as they arealiased by the validate field.Fix by changing the attribute type to NLA_BINARY which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().As a result, move the length validation to the validation function.No regressions in MPLS tests: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0[1]WARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| linux | | https://git.kernel.org/linus/9e17f99220d111ea031b44153fdfe364b0024ff2 | https://git.kernel.org/linus/2a2ea50870baa3fb4de0872c5b60828138654ca7 | 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:net/sched: act_mpls: Fix warning during failed attribute validationThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has avalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalidcombination according to the comment above 'struct nla_policy':"Meaning of `validate' field, use via NLA_POLICY_VALIDATE_FN: NLA_BINARY Validation function called for the attribute. All other Unused- but note that it'sa union"This can trigger the warning [1] in nla_get_range_unsigned() whenvalidation of the attribute fails. Despite being of 'NLA_U32' type, theassociated 'min'/'max' fields in the policy are negative as they arealiased by the 'validate' field.Fix by changing the attribute type to 'NLA_BINARY' which is consistentwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().Asa result, move the length validation to the validation function.No regressions in MPLS tests:# ./tdc.py -f tc-tests/actions/mpls.json [...]# echo $? 0[1]WARNING: CPU:0 PID: 17743 at lib/nlattr.c:118nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117Modules linked in:CPU:0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3Hardware name: QEMU Standard PC (i440FX+ PIIX, 1996), BIOSrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014RIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117[...]Call Trace: <TASK> __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x197/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcdThe Linux kernel CVE team has assigned CVE-2023-52906 to this issue.
