CVE-2024-26781

一、漏洞信息
 漏洞编号：[CVE-2024-26781](https://nvd.nist.gov/vuln/detail/CVE-2024-26781)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)
 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.19,6.4.0,6.6.0
 CVSS V3.0分值：
  BaseScore：5.5 Medium
  Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:mptcp: fix possible deadlock in subflow diagSyzbot and Eric reported a lockdep splat in the subflow diag:   WARNING: possible circular locking dependency detected   6.8.0-rc4-syzkaller-00212-g40b9385dd8e6 #0 Not tainted   syz-executor.2/24141 is trying to acquire lock:   ffff888045870130 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at:   tcp_diag_put_ulp net/ipv4/tcp_diag.c:100 [inline]   ffff888045870130 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at:   tcp_diag_get_aux+0x738/0x830 net/ipv4/tcp_diag.c:137   but task is already holding lock:   ffffc9000135e488 (&h->lhash2[i].lock){+.+.}-{2:2}, at: spin_lock   include/linux/spinlock.h:351 [inline]   ffffc9000135e488 (&h->lhash2[i].lock){+.+.}-{2:2}, at:   inet_diag_dump_icsk+0x39f/0x1f80 net/ipv4/inet_diag.c:1038   which lock already depends on the new lock.   the existing dependency chain (in reverse order) is:   -> #1 (&h->lhash2[i].lock){+.+.}-{2:2}:   lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754   __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]   _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154   spin_lock include/linux/spinlock.h:351 [inline]   __inet_hash+0x335/0xbe0 net/ipv4/inet_hashtables.c:743   inet_csk_listen_start+0x23a/0x320 net/ipv4/inet_connection_sock.c:1261   __inet_listen_sk+0x2a2/0x770 net/ipv4/af_inet.c:217   inet_listen+0xa3/0x110 net/ipv4/af_inet.c:239   rds_tcp_listen_init+0x3fd/0x5a0 net/rds/tcp_listen.c:316   rds_tcp_init_net+0x141/0x320 net/rds/tcp.c:577   ops_init+0x352/0x610 net/core/net_namespace.c:136   __register_pernet_operations net/core/net_namespace.c:1214 [inline]   register_pernet_operations+0x2cb/0x660 net/core/net_namespace.c:1283   register_pernet_device+0x33/0x80 net/core/net_namespace.c:1370   rds_tcp_init+0x62/0xd0 net/rds/tcp.c:735   do_one_initcall+0x238/0x830 init/main.c:1236   do_initcall_level+0x157/0x210 init/main.c:1298   do_initcalls+0x3f/0x80 init/main.c:1314   kernel_init_freeable+0x42f/0x5d0 init/main.c:1551   kernel_init+0x1d/0x2a0 init/main.c:1441   ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147   ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242   -> #0 (k-sk_lock-AF_INET6){+.+.}-{0:0}:   check_prev_add kernel/locking/lockdep.c:3134 [inline]   check_prevs_add kernel/locking/lockdep.c:3253 [inline]   validate_chain+0x18ca/0x58e0 kernel/locking/lockdep.c:3869   __lock_acquire+0x1345/0x1fd0 kernel/locking/lockdep.c:5137   lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754   lock_sock_fast include/net/sock.h:1723 [inline]   subflow_get_info+0x166/0xd20 net/mptcp/diag.c:28   tcp_diag_put_ulp net/ipv4/tcp_diag.c:100 [inline]   tcp_diag_get_aux+0x738/0x830 net/ipv4/tcp_diag.c:137   inet_sk_diag_fill+0x10ed/0x1e00 net/ipv4/inet_diag.c:345   inet_diag_dump_icsk+0x55b/0x1f80 net/ipv4/inet_diag.c:1061   __inet_diag_dump+0x211/0x3a0 net/ipv4/inet_diag.c:1263   inet_diag_dump_compat+0x1c1/0x2d0 net/ipv4/inet_diag.c:1371   netlink_dump+0x59b/0xc80 net/netlink/af_netlink.c:2264   __netlink_dump_start+0x5df/0x790 net/netlink/af_netlink.c:2370   netlink_dump_start include/linux/netlink.h:338 [inline]   inet_diag_rcv_msg_compat+0x209/0x4c0 net/ipv4/inet_diag.c:1405   sock_diag_rcv_msg+0xe7/0x410   netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543   sock_diag_rcv+0x2a/0x40 net/core/sock_diag.c:280   netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]   netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367   netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908   sock_sendmsg_nosec net/socket.c:730 [inline]   __sock_sendmsg+0x221/0x270 net/socket.c:745   ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584   ___sys_sendmsg net/socket.c:2638 [inline]   __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667   do_syscall_64+0xf9/0x240   entry_SYSCALL_64_after_hwframe+0x6f/0x77As noted by Eric we can break the lock dependency chain avoiddumping ---truncated---
 漏洞公开时间：2024-04-04 17:15:07
 漏洞创建时间：2024-04-04 10:11:54
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2024-26781
<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/70e5b013538d5e4cb421afed431a5fcd2a5d49ee |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/cc32ba2fdf3f8b136619fff551f166ba51ec856d |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/d487e7ba1bc7444d5f062c4930ef8436c47c7e63 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/d6a9608af9a75d13243d217f6ce1e30e57d56ffe |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/f27d319df055629480b84b9288a502337b6f2a2e |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/fa8c776f4c323a9fbc8ddf25edcb962083391430 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-26781 | https://bugzilla.suse.com/show_bug.cgi?id=1222589 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2024-26781 | https://bugzilla.suse.com/show_bug.cgi?id=1222589 |
| suse_bugzilla | https://git.kernel.org/stable/c/70e5b013538d5e4cb421afed431a5fcd2a5d49ee | https://bugzilla.suse.com/show_bug.cgi?id=1222589 |
| suse_bugzilla | https://git.kernel.org/stable/c/cc32ba2fdf3f8b136619fff551f166ba51ec856d | https://bugzilla.suse.com/show_bug.cgi?id=1222589 |
| suse_bugzilla | https://git.kernel.org/stable/c/d487e7ba1bc7444d5f062c4930ef8436c47c7e63 | https://bugzilla.suse.com/show_bug.cgi?id=1222589 |
| suse_bugzilla | https://git.kernel.org/stable/c/f27d319df055629480b84b9288a502337b6f2a2e | https://bugzilla.suse.com/show_bug.cgi?id=1222589 |
| suse_bugzilla | https://git.kernel.org/stable/c/fa8c776f4c323a9fbc8ddf25edcb962083391430 | https://bugzilla.suse.com/show_bug.cgi?id=1222589 |
| suse_bugzilla | https://git.kernel.org/stable/c/d6a9608af9a75d13243d217f6ce1e30e57d56ffe | https://bugzilla.suse.com/show_bug.cgi?id=1222589 |
| suse_bugzilla | https://bugzilla.redhat.com/show_bug.cgi?id=2273470 | https://bugzilla.suse.com/show_bug.cgi?id=1222589 |
| redhat_bugzilla | https://lore.kernel.org/linux-cve-announce/2024040458-CVE-2024-26781-0389@gregkh/T | https://bugzilla.redhat.com/show_bug.cgi?id=2273470 |
| ubuntu | https://git.kernel.org/stable/c/70e5b013538d5e4cb421afed431a5fcd2a5d49ee | https://ubuntu.com/security/CVE-2024-26781 |
| ubuntu | https://git.kernel.org/stable/c/cc32ba2fdf3f8b136619fff551f166ba51ec856d | https://ubuntu.com/security/CVE-2024-26781 |
| ubuntu | https://git.kernel.org/stable/c/f27d319df055629480b84b9288a502337b6f2a2e | https://ubuntu.com/security/CVE-2024-26781 |
| ubuntu | https://git.kernel.org/stable/c/fa8c776f4c323a9fbc8ddf25edcb962083391430 | https://ubuntu.com/security/CVE-2024-26781 |
| ubuntu | https://git.kernel.org/stable/c/d487e7ba1bc7444d5f062c4930ef8436c47c7e63 | https://ubuntu.com/security/CVE-2024-26781 |
| ubuntu | https://www.cve.org/CVERecord?id=CVE-2024-26781 | https://ubuntu.com/security/CVE-2024-26781 |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2024-26781 | https://ubuntu.com/security/CVE-2024-26781 |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2024-26781 | https://ubuntu.com/security/CVE-2024-26781 |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2024-26781 | https://ubuntu.com/security/CVE-2024-26781 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2024-26781 |

</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_kernel | 5.10.212 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=70e5b013538dIssue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=8affdbb3e2ef | linuxkernelcves |
| linux_kernel | 5.15.151 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=cc32ba2fdf3fIssue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=8affdbb3e2ef | linuxkernelcves |
| linux_kernel | 6.1.81 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f27d319df055Issue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=8affdbb3e2ef | linuxkernelcves |
| linux_kernel | 6.6.21 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=fa8c776f4c32Issue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=8affdbb3e2ef | linuxkernelcves |
| linux_kernel | 6.7.9 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=d487e7ba1bc7Please | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=8affdbb3e2ef | linuxkernelcves |
| linux |  | https://git.kernel.org/linus/d6a9608af9a75d13243d217f6ce1e30e57d56ffe | https://git.kernel.org/linus/b8adb69a7d29c2d33eb327bca66476fb6066516b | 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:mptcp: fix possible deadlock in subflow diagSyzbot and Eric reported a lockdep splat in the subflow diag:   WARNING: possible circular locking dependency detected   6.8.0-rc4-syzkaller-00212-g40b9385dd8e6 #0 Not tainted   syz-executor.2/24141 is trying to acquire lock:   ffff888045870130 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at:   tcp_diag_put_ulp net/ipv4/tcp_diag.c:100 [inline]   ffff888045870130 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at:   tcp_diag_get_aux+0x738/0x830 net/ipv4/tcp_diag.c:137As noted by Eric we can break the lock dependency chain avoiddumping ---truncated---
 openEuler评分：
  5.5
 Vector：CVSS：3.0/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-22.03-LTS-SP3(5.10.0):受影响
2.openEuler-22.03-LTS-SP4(5.10.0):受影响
3.openEuler-20.03-LTS-SP4(4.19.90):不受影响
4.master(6.6.0):不受影响
5.openEuler-24.03-LTS(6.6.0):不受影响
6.openEuler-24.03-LTS-Next(6.6.0):不受影响
7.openEuler-24.03-LTS-SP1(6.6.0):不受影响

修复是否涉及abi变化(是/否)：
  1.openEuler-20.03-LTS-SP4(4.19.90):否
2.openEuler-22.03-LTS-SP1(5.10.0):否
3.openEuler-22.03-LTS-SP3(5.10.0):否
4.master(6.6.0):否
5.openEuler-24.03-LTS(6.6.0):否
6.openEuler-24.03-LTS-Next(6.6.0):否
7.openEuler-22.03-LTS-SP4(5.10.0):否
8.openEuler-24.03-LTS-SP1(6.6.0):否

原因说明：
  1.openEuler-22.03-LTS-SP3(5.10.0):不修复-超出修复范围
2.openEuler-22.03-LTS-SP4(5.10.0):不修复-超出修复范围
3.master(6.6.0):不受影响-漏洞代码不能被攻击者触发
4.openEuler-24.03-LTS-Next(6.6.0):不受影响-漏洞代码不能被攻击者触发
5.openEuler-20.03-LTS-SP4(4.19.90):不受影响-漏洞代码不存在
6.openEuler-24.03-LTS(6.6.0):不受影响-漏洞代码不存在
7.openEuler-24.03-LTS-SP1(6.6.0):不受影响-漏洞代码不存在

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2025-1096

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