CVE-2025-38491

一、漏洞信息
 漏洞编号：[CVE-2025-38491](https://nvd.nist.gov/vuln/detail/CVE-2025-38491)
 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：N/A None
  Vector：CVSS：3.0/
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:mptcp: make fallback action and fallback decision atomicSyzkaller reported the following splat:  WARNING: CPU: 1 PID: 7704 at net/mptcp/protocol.h:1223 __mptcp_do_fallback net/mptcp/protocol.h:1223 [inline]  WARNING: CPU: 1 PID: 7704 at net/mptcp/protocol.h:1223 mptcp_do_fallback net/mptcp/protocol.h:1244 [inline]  WARNING: CPU: 1 PID: 7704 at net/mptcp/protocol.h:1223 check_fully_established net/mptcp/options.c:982 [inline]  WARNING: CPU: 1 PID: 7704 at net/mptcp/protocol.h:1223 mptcp_incoming_options+0x21a8/0x2510 net/mptcp/options.c:1153  Modules linked in:  CPU: 1 UID: 0 PID: 7704 Comm: syz.3.1419 Not tainted 6.16.0-rc3-gbd5ce2324dba #20 PREEMPT(voluntary)  Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014  RIP: 0010:__mptcp_do_fallback net/mptcp/protocol.h:1223 [inline]  RIP: 0010:mptcp_do_fallback net/mptcp/protocol.h:1244 [inline]  RIP: 0010:check_fully_established net/mptcp/options.c:982 [inline]  RIP: 0010:mptcp_incoming_options+0x21a8/0x2510 net/mptcp/options.c:1153  Code: 24 18 e8 bb 2a 00 fd e9 1b df ff ff e8 b1 21 0f 00 e8 ec 5f c4 fc 44 0f b7 ac 24 b0 00 00 00 e9 54 f1 ff ff e8 d9 5f c4 fc 90 <0f> 0b 90 e9 b8 f4 ff ff e8 8b 2a 00 fd e9 8d e6 ff ff e8 81 2a 00  RSP: 0018:ffff8880a3f08448 EFLAGS: 00010246  RAX: 0000000000000000 RBX: ffff8880180a8000 RCX: ffffffff84afcf45  RDX: ffff888090223700 RSI: ffffffff84afdaa7 RDI: 0000000000000001  RBP: ffff888017955780 R08: 0000000000000001 R09: 0000000000000000  R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000  R13: ffff8880180a8910 R14: ffff8880a3e9d058 R15: 0000000000000000  FS:  00005555791b8500(0000) GS:ffff88811c495000(0000) knlGS:0000000000000000  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033  CR2: 000000110c2800b7 CR3: 0000000058e44000 CR4: 0000000000350ef0  Call Trace:   <IRQ>   tcp_reset+0x26f/0x2b0 net/ipv4/tcp_input.c:4432   tcp_validate_incoming+0x1057/0x1b60 net/ipv4/tcp_input.c:5975   tcp_rcv_established+0x5b5/0x21f0 net/ipv4/tcp_input.c:6166   tcp_v4_do_rcv+0x5dc/0xa70 net/ipv4/tcp_ipv4.c:1925   tcp_v4_rcv+0x3473/0x44a0 net/ipv4/tcp_ipv4.c:2363   ip_protocol_deliver_rcu+0xba/0x480 net/ipv4/ip_input.c:205   ip_local_deliver_finish+0x2f1/0x500 net/ipv4/ip_input.c:233   NF_HOOK include/linux/netfilter.h:317 [inline]   NF_HOOK include/linux/netfilter.h:311 [inline]   ip_local_deliver+0x1be/0x560 net/ipv4/ip_input.c:254   dst_input include/net/dst.h:469 [inline]   ip_rcv_finish net/ipv4/ip_input.c:447 [inline]   NF_HOOK include/linux/netfilter.h:317 [inline]   NF_HOOK include/linux/netfilter.h:311 [inline]   ip_rcv+0x514/0x810 net/ipv4/ip_input.c:567   __netif_receive_skb_one_core+0x197/0x1e0 net/core/dev.c:5975   __netif_receive_skb+0x1f/0x120 net/core/dev.c:6088   process_backlog+0x301/0x1360 net/core/dev.c:6440   __napi_poll.constprop.0+0xba/0x550 net/core/dev.c:7453   napi_poll net/core/dev.c:7517 [inline]   net_rx_action+0xb44/0x1010 net/core/dev.c:7644   handle_softirqs+0x1d0/0x770 kernel/softirq.c:579   do_softirq+0x3f/0x90 kernel/softirq.c:480   </IRQ>   <TASK>   __local_bh_enable_ip+0xed/0x110 kernel/softirq.c:407   local_bh_enable include/linux/bottom_half.h:33 [inline]   inet_csk_listen_stop+0x2c5/0x1070 net/ipv4/inet_connection_sock.c:1524   mptcp_check_listen_stop.part.0+0x1cc/0x220 net/mptcp/protocol.c:2985   mptcp_check_listen_stop net/mptcp/mib.h:118 [inline]   __mptcp_close+0x9b9/0xbd0 net/mptcp/protocol.c:3000   mptcp_close+0x2f/0x140 net/mptcp/protocol.c:3066   inet_release+0xed/0x200 net/ipv4/af_inet.c:435   inet6_release+0x4f/0x70 net/ipv6/af_inet6.c:487   __sock_release+0xb3/0x270 net/socket.c:649   sock_close+0x1c/0x30 net/socket.c:1439   __fput+0x402/0xb70 fs/file_table.c:465   task_work_run+0x150/0x240 kernel/task_work.c:227   resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]   exit_to_user_mode_loop+0xd4---truncated---
 漏洞公开时间：2025-07-28 20:15:31
 漏洞创建时间：2025-07-28 20:39:43
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2025-38491
<details>
<summary>更多参考(点击展开)</summary>

无
</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:
  七彩瞬析开源风险感知平台
 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  |
| ------- | -------- | ------- | -------- | --------- |
| gregkh/linux |  | https://git.kernel.org/stable/c/54999dea879fecb761225e28f274b40662918c30.patch |  | ljqc |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
                            经确认，v6.6分支代码中存在该问题，需要修复。V5.10分支没有对应的代码，不存在该漏洞。             
 openEuler评分：
  3.9
 Vector：CVSS：3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
 受影响版本排查(受影响/不受影响)：
  1.master(6.12.33):受影响
2.openEuler-24.03-LTS:受影响
3.openEuler-24.03-LTS-Next:受影响
4.openEuler-24.03-LTS-SP1:受影响
5.openEuler-24.03-LTS-SP2:受影响
6.openEuler-20.03-LTS-SP4(4.19.90):不受影响
7.openEuler-22.03-LTS-SP3(5.10.0):不受影响
8.openEuler-22.03-LTS-SP4(5.10.0):不受影响

修复是否涉及abi变化(是/否)：
  1.master(6.12.33):否
2.openEuler-20.03-LTS-SP4(4.19.90):否
3.openEuler-22.03-LTS-SP3(5.10.0):否
4.openEuler-22.03-LTS-SP4(5.10.0):否
5.openEuler-24.03-LTS:否
6.openEuler-24.03-LTS-Next:否
7.openEuler-24.03-LTS-SP1:否
8.openEuler-24.03-LTS-SP2:否

原因说明：
  1.master(6.12.33):正常修复
2.openEuler-24.03-LTS:正常修复
3.openEuler-24.03-LTS-Next:正常修复
4.openEuler-24.03-LTS-SP1:正常修复
5.openEuler-24.03-LTS-SP2:正常修复
6.openEuler-20.03-LTS-SP4(4.19.90):不受影响-漏洞代码不存在
7.openEuler-22.03-LTS-SP3(5.10.0):不受影响-漏洞代码不存在
8.openEuler-22.03-LTS-SP4(5.10.0):不受影响-漏洞代码不存在

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