CVE-2024-26805

一、漏洞信息
 漏洞编号：[CVE-2024-26805](https://nvd.nist.gov/vuln/detail/CVE-2024-26805)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)
 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.0,6.1.14,6.1.19,6.1.5,6.1.6,6.1.8,6.4.0
 CVSS V2.0分值：
  BaseScore：0.0 Low
  Vector：CVSS：2.0/
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:netlink: Fix kernel-infoleak-after-free in __skb_datagram_itersyzbot reported the following uninit-value access issue [1]:netlink_to_full_skb() creates a new `skb` and puts the `skb->data`passed as a 1st arg of netlink_to_full_skb() onto new `skb`. The datasize is specified as `len` and passed to skb_put_data(). This `len`is based on `skb->end` that is not data offset but buffer offset. The`skb->end` contains data and tailroom. Since the tailroom is notinitialized when the new `skb` created, KMSAN detects uninitializedmemory area when copying the data.This patch resolved this issue by correct the len from `skb->end` to`skb->len`, which is the actual data offset.BUG: KMSAN: kernel-infoleak-after-free in instrument_copy_to_user include/linux/instrumented.h:114 [inline]BUG: KMSAN: kernel-infoleak-after-free in copy_to_user_iter lib/iov_iter.c:24 [inline]BUG: KMSAN: kernel-infoleak-after-free in iterate_ubuf include/linux/iov_iter.h:29 [inline]BUG: KMSAN: kernel-infoleak-after-free in iterate_and_advance2 include/linux/iov_iter.h:245 [inline]BUG: KMSAN: kernel-infoleak-after-free in iterate_and_advance include/linux/iov_iter.h:271 [inline]BUG: KMSAN: kernel-infoleak-after-free in _copy_to_iter+0x364/0x2520 lib/iov_iter.c:186 instrument_copy_to_user include/linux/instrumented.h:114 [inline] copy_to_user_iter lib/iov_iter.c:24 [inline] iterate_ubuf include/linux/iov_iter.h:29 [inline] iterate_and_advance2 include/linux/iov_iter.h:245 [inline] iterate_and_advance include/linux/iov_iter.h:271 [inline] _copy_to_iter+0x364/0x2520 lib/iov_iter.c:186 copy_to_iter include/linux/uio.h:197 [inline] simple_copy_to_iter+0x68/0xa0 net/core/datagram.c:532 __skb_datagram_iter+0x123/0xdc0 net/core/datagram.c:420 skb_copy_datagram_iter+0x5c/0x200 net/core/datagram.c:546 skb_copy_datagram_msg include/linux/skbuff.h:3960 [inline] packet_recvmsg+0xd9c/0x2000 net/packet/af_packet.c:3482 sock_recvmsg_nosec net/socket.c:1044 [inline] sock_recvmsg net/socket.c:1066 [inline] sock_read_iter+0x467/0x580 net/socket.c:1136 call_read_iter include/linux/fs.h:2014 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x8f6/0xe00 fs/read_write.c:470 ksys_read+0x20f/0x4c0 fs/read_write.c:613 __do_sys_read fs/read_write.c:623 [inline] __se_sys_read fs/read_write.c:621 [inline] __x64_sys_read+0x93/0xd0 fs/read_write.c:621 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6bUninit was stored to memory at: skb_put_data include/linux/skbuff.h:2622 [inline] netlink_to_full_skb net/netlink/af_netlink.c:181 [inline] __netlink_deliver_tap_skb net/netlink/af_netlink.c:298 [inline] __netlink_deliver_tap+0x5be/0xc90 net/netlink/af_netlink.c:325 netlink_deliver_tap net/netlink/af_netlink.c:338 [inline] netlink_deliver_tap_kernel net/netlink/af_netlink.c:347 [inline] netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x10f1/0x1250 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x1238/0x13d0 net/netlink/af_netlink.c:1910 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2584 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638 __sys_sendmsg net/socket.c:2667 [inline] __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __x64_sys_sendmsg+0x307/0x490 net/socket.c:2674 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6bUninit was created at: free_pages_prepare mm/page_alloc.c:1087 [inline] free_unref_page_prepare+0xb0/0xa40 mm/page_alloc.c:2347 free_unref_page_list+0xeb/0x1100 mm/page_alloc.c:2533 release_pages+0x23d3/0x2410 mm/swap.c:1042 free_pages_and_swap_cache+0xd9/0xf0 mm/swap_state.c:316 tlb_batch_pages---truncated---
 漏洞公开时间：2024-04-04 17:15:09
 漏洞创建时间：2024-04-04 18:09:44
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2024-26805
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/0b27bf4c494d61e5663baa34c3edd7ccebf0ea44 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/59fc3e3d049e39e7d0d271f20dd5fb47c57faf1d |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/661779e1fcafe1b74b3f3fe8e980c1e207fea1fd |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/9ae51361da43270f4ba0eb924427a07e87e48777 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/c71ed29d15b1a1ed6c464f8c3536996963046285 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/d3ada42e534a83b618bbc1e490d23bf0fdae4736 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/ec343a55b687a452f5e87f3b52bf9f155864df65 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/f19d1f98e60e68b11fc60839105dd02a30ec0d77 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-26805 | https://bugzilla.suse.com/show_bug.cgi?id=1222630 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2024-26805 | https://bugzilla.suse.com/show_bug.cgi?id=1222630 |
| suse_bugzilla | https://git.kernel.org/stable/c/0b27bf4c494d61e5663baa34c3edd7ccebf0ea44 | https://bugzilla.suse.com/show_bug.cgi?id=1222630 |
| suse_bugzilla | https://git.kernel.org/stable/c/59fc3e3d049e39e7d0d271f20dd5fb47c57faf1d | https://bugzilla.suse.com/show_bug.cgi?id=1222630 |
| suse_bugzilla | https://git.kernel.org/stable/c/661779e1fcafe1b74b3f3fe8e980c1e207fea1fd | https://bugzilla.suse.com/show_bug.cgi?id=1222630 |
| suse_bugzilla | https://git.kernel.org/stable/c/9ae51361da43270f4ba0eb924427a07e87e48777 | https://bugzilla.suse.com/show_bug.cgi?id=1222630 |
| suse_bugzilla | https://git.kernel.org/stable/c/c71ed29d15b1a1ed6c464f8c3536996963046285 | https://bugzilla.suse.com/show_bug.cgi?id=1222630 |
| suse_bugzilla | https://git.kernel.org/stable/c/d3ada42e534a83b618bbc1e490d23bf0fdae4736 | https://bugzilla.suse.com/show_bug.cgi?id=1222630 |
| suse_bugzilla | https://git.kernel.org/stable/c/ec343a55b687a452f5e87f3b52bf9f155864df65 | https://bugzilla.suse.com/show_bug.cgi?id=1222630 |
| suse_bugzilla | https://git.kernel.org/stable/c/f19d1f98e60e68b11fc60839105dd02a30ec0d77 | https://bugzilla.suse.com/show_bug.cgi?id=1222630 |
| suse_bugzilla | https://bugzilla.redhat.com/show_bug.cgi?id=2273421 | https://bugzilla.suse.com/show_bug.cgi?id=1222630 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-26805.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1222630 |
| redhat_bugzilla | https://lore.kernel.org/linux-cve-announce/2024040404-CVE-2024-26805-7016@gregkh/T | https://bugzilla.redhat.com/show_bug.cgi?id=2273421 |
| ubuntu | https://git.kernel.org/stable/c/ec343a55b687a452f5e87f3b52bf9f155864df65 | https://ubuntu.com/security/CVE-2024-26805 |
| ubuntu | https://git.kernel.org/stable/c/9ae51361da43270f4ba0eb924427a07e87e48777 | https://ubuntu.com/security/CVE-2024-26805 |
| ubuntu | https://git.kernel.org/stable/c/f19d1f98e60e68b11fc60839105dd02a30ec0d77 | https://ubuntu.com/security/CVE-2024-26805 |
| ubuntu | https://git.kernel.org/stable/c/c71ed29d15b1a1ed6c464f8c3536996963046285 | https://ubuntu.com/security/CVE-2024-26805 |
| ubuntu | https://git.kernel.org/stable/c/0b27bf4c494d61e5663baa34c3edd7ccebf0ea44 | https://ubuntu.com/security/CVE-2024-26805 |
| ubuntu | https://git.kernel.org/stable/c/d3ada42e534a83b618bbc1e490d23bf0fdae4736 | https://ubuntu.com/security/CVE-2024-26805 |
| ubuntu | https://git.kernel.org/stable/c/59fc3e3d049e39e7d0d271f20dd5fb47c57faf1d | https://ubuntu.com/security/CVE-2024-26805 |
| ubuntu | https://git.kernel.org/stable/c/661779e1fcafe1b74b3f3fe8e980c1e207fea1fd | https://ubuntu.com/security/CVE-2024-26805 |
| ubuntu | https://www.cve.org/CVERecord?id=CVE-2024-26805 | https://ubuntu.com/security/CVE-2024-26805 |
| ubuntu | https://ubuntu.com/security/notices/USN-6774-1 | https://ubuntu.com/security/CVE-2024-26805 |
| ubuntu | https://ubuntu.com/security/notices/USN-6777-1 | https://ubuntu.com/security/CVE-2024-26805 |
| ubuntu | https://ubuntu.com/security/notices/USN-6778-1 | https://ubuntu.com/security/CVE-2024-26805 |
| ubuntu | https://ubuntu.com/security/notices/USN-6777-2 | https://ubuntu.com/security/CVE-2024-26805 |
| ubuntu | https://ubuntu.com/security/notices/USN-6777-3 | https://ubuntu.com/security/CVE-2024-26805 |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2024-26805 | https://ubuntu.com/security/CVE-2024-26805 |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2024-26805 | https://ubuntu.com/security/CVE-2024-26805 |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2024-26805 | https://ubuntu.com/security/CVE-2024-26805 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2024-26805 |
| ubuntu | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26805 | https://ubuntu.com/security/CVE-2024-26805 |

</details>

漏洞分析指导链接：
  https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
 漏洞数据来源:
  openBrain开源漏洞感知系统
 漏洞补丁信息：
  <details>
<summary>详情(点击展开)</summary>

| 影响的包 | 修复版本 | 修复补丁 | 问题引入补丁 | 来源  |
| ------- | -------- | ------- | -------- | --------- |
| linux |  | https://git.kernel.org/linus/661779e1fcafe1b74b3f3fe8e980c1e207fea1fd | https://git.kernel.org/linus/1853c949646005b5959c483becde86608f548f24 | 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:netlink: Fix kernel-infoleak-after-free in __skb_datagram_itersyzbot reported the following uninit-value access issue [1]:netlink_to_full_skb() creates a new `skb` and puts the `skb->data`passed as a 1st arg of netlink_to_full_skb() onto new `skb`. The datasize is specified as `len` and passed to skb_put_data(). This `len`is based on `skb->end` that is not data offset but buffer offset. The`skb->end` contains data and tailroom. Since the tailroom is notinitialized when the new `skb` created, KMSAN detects uninitializedmemory area when copying the data.This patch resolved this issue by correct the len from `skb->end` to`skb->len`, which is the actual data offset.BUG: KMSAN: kernel-infoleak-after-free in instrument_copy_to_user include/linux/instrumented.h:114 [inline]BUG: KMSAN: kernel-infoleak-after-free in copy_to_user_iter lib/iov_iter.c:24 [inline]BUG: KMSAN: kernel-infoleak-after-free in iterate_ubuf include/linux/iov_iter.h:29 [inline]BUG: KMSAN: kernel-infoleak-after-free in iterate_and_advance2 include/linux/iov_iter.h:245 [inline]BUG: KMSAN: kernel-infoleak-after-free in iterate_and_advance include/linux/iov_iter.h:271 [inline]BUG: KMSAN: kernel-infoleak-after-free in _copy_to_iter+0x364/0x2520 lib/iov_iter.c:186 instrument_copy_to_user include/linux/instrumented.h:114 [inline] copy_to_user_iter lib/iov_iter.c:24 [inline] iterate_ubuf include/linux/iov_iter.h:29 [inline] iterate_and_advance2 include/linux/iov_iter.h:245 [inline] iterate_and_advance include/linux/iov_iter.h:271 [inline] _copy_to_iter+0x364/0x2520 lib/iov_iter.c:186 copy_to_iter include/linux/uio.h:197 [inline] simple_copy_to_iter+0x68/0xa0 net/core/datagram.c:532 __skb_datagram_iter+0x123/0xdc0 net/core/datagram.c:420 skb_copy_datagram_iter+0x5c/0x200 net/core/datagram.c:546 skb_copy_datagram_msg include/linux/skbuff.h:3960 [inline] packet_recvmsg+0xd9c/0x2000 net/packet/af_packet.c:3482 sock_recvmsg_nosec net/socket.c:1044 [inline] sock_recvmsg net/socket.c:1066 [inline] sock_read_iter+0x467/0x580 net/socket.c:1136 call_read_iter include/linux/fs.h:2014 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x8f6/0xe00 fs/read_write.c:470 ksys_read+0x20f/0x4c0 fs/read_write.c:613 __do_sys_read fs/read_write.c:623 [inline] __se_sys_read fs/read_write.c:621 [inline] __x64_sys_read+0x93/0xd0 fs/read_write.c:621 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6bUninit was stored to memory at: skb_put_data include/linux/skbuff.h:2622 [inline] netlink_to_full_skb net/netlink/af_netlink.c:181 [inline] __netlink_deliver_tap_skb net/netlink/af_netlink.c:298 [inline] __netlink_deliver_tap+0x5be/0xc90 net/netlink/af_netlink.c:325 netlink_deliver_tap net/netlink/af_netlink.c:338 [inline] netlink_deliver_tap_kernel net/netlink/af_netlink.c:347 [inline] netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x10f1/0x1250 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x1238/0x13d0 net/netlink/af_netlink.c:1910 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2584 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638 __sys_sendmsg net/socket.c:2667 [inline] __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __x64_sys_sendmsg+0x307/0x490 net/socket.c:2674 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6bUninit was created at: free_pages_prepare mm/page_alloc.c:1087 [inline] free_unref_page_prepare+0xb0/0xa40 mm/page_alloc.c:2347 free_unref_page_list+0xeb/0x1100 mm/page_alloc.c:2533 release_pages+0x23d3/0x2410 mm/swap.c:1042 free_pages_and_swap_cache+0xd9/0xf0 mm/swap_state.c:316 tlb_batch_pages---truncated---   
 openEuler评分：
  5.5
 Vector：CVSS：2.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 受影响版本排查(受影响/不受影响)：
  1.openEuler-20.03-LTS-SP1(4.19.90):受影响
2.openEuler-20.03-LTS-SP4(4.19.90):受影响
3.openEuler-22.03-LTS(5.10.0):受影响
4.openEuler-22.03-LTS-SP1(5.10.0):受影响
5.openEuler-22.03-LTS-SP2(5.10.0):受影响
6.openEuler-22.03-LTS-SP3(5.10.0):受影响
7.openEuler-22.03-LTS-SP4:不受影响
8.master(6.1.0):不受影响
9.openEuler-22.03-LTS-Next(5.10.0):不受影响
10.openEuler-24.03-LTS:不受影响
11.openEuler-24.03-LTS-Next:不受影响

修复是否涉及abi变化(是/否)：
  1.openEuler-20.03-LTS-SP1(4.19.90):否
2.openEuler-20.03-LTS-SP4(4.19.90):否
3.openEuler-22.03-LTS(5.10.0):否
4.openEuler-22.03-LTS-SP1(5.10.0):否
5.openEuler-22.03-LTS-SP2(5.10.0):否
6.openEuler-22.03-LTS-SP3(5.10.0):否
7.master(6.1.0):否
8.openEuler-22.03-LTS-Next(5.10.0):否
9.openEuler-24.03-LTS:否
10.openEuler-24.03-LTS-Next:否
11.openEuler-22.03-LTS-SP4:否

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2024-1649

src-openEuler/kernel
关闭

内容风险标识

评论 (15)

src-openEuler/kernel关闭 .gitee-modal { width: 500px !important; }

内容风险标识

CVE-2024-26805

评论 (15)

搜索帮助

src-openEuler/kernel
关闭