CVE-2025-40027— Linux kernel 安全漏洞
一分钟漏洞结论
影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于net/9p组件中存在双重请求释放，可能导致内存损坏。
可能的 ATT&CK 技术 1 AI
T1203 · Exploitation for Client Execution影响版本矩阵 20
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | afd8d65411551839b7ab14a539d00075b2793451< a5901a0dfb5964525990106706ae8b98db098226 |
affected |
afd8d65411551839b7ab14a539d00075b2793451< 5c64c0b7b3446f7ed088a13bc8d7487d66534cbb |
affected | ||
afd8d65411551839b7ab14a539d00075b2793451< c1db864270eb7fea94a9ef201da0c9dc1cbab7b8 |
affected | ||
afd8d65411551839b7ab14a539d00075b2793451< 0e0097005abc02c9f262370674f855625f4f3fb4 |
affected | ||
afd8d65411551839b7ab14a539d00075b2793451< 284e67a93b8c48952b6fc82129a8d3eb9dc73b06 |
affected | ||
afd8d65411551839b7ab14a539d00075b2793451< 716dceb19a9f8ff6c9d3aee5a771a93d6a47a0b6 |
affected | ||
afd8d65411551839b7ab14a539d00075b2793451< 448db01a48e1cdbbc31c995716a5dac1e52ba036 |
affected | ||
afd8d65411551839b7ab14a539d00075b2793451< 94797b84cb9985022eb9cb3275c9497fbc883bb6 |
affected | ||
| … +12 条更多 | |||
获取后续新漏洞提醒
登录后订阅
一、 漏洞 CVE-2025-40027 基础信息
漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
查看神龙十问 ↗
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
net/9p: fix double req put in p9_fd_cancelled
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
net/9p: fix double req put in p9_fd_cancelled
Syzkaller reports a KASAN issue as below:
general protection fault, probably for non-canonical address 0xfbd59c0000000021: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: maybe wild-memory-access in range [0xdead000000000108-0xdead00000000010f]
CPU: 0 PID: 5083 Comm: syz-executor.2 Not tainted 6.1.134-syzkaller-00037-g855bd1d7d838 #0
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:__list_del include/linux/list.h:114 [inline]
RIP: 0010:__list_del_entry include/linux/list.h:137 [inline]
RIP: 0010:list_del include/linux/list.h:148 [inline]
RIP: 0010:p9_fd_cancelled+0xe9/0x200 net/9p/trans_fd.c:734
Call Trace:
<TASK>
p9_client_flush+0x351/0x440 net/9p/client.c:614
p9_client_rpc+0xb6b/0xc70 net/9p/client.c:734
p9_client_version net/9p/client.c:920 [inline]
p9_client_create+0xb51/0x1240 net/9p/client.c:1027
v9fs_session_init+0x1f0/0x18f0 fs/9p/v9fs.c:408
v9fs_mount+0xba/0xcb0 fs/9p/vfs_super.c:126
legacy_get_tree+0x108/0x220 fs/fs_context.c:632
vfs_get_tree+0x8e/0x300 fs/super.c:1573
do_new_mount fs/namespace.c:3056 [inline]
path_mount+0x6a6/0x1e90 fs/namespace.c:3386
do_mount fs/namespace.c:3399 [inline]
__do_sys_mount fs/namespace.c:3607 [inline]
__se_sys_mount fs/namespace.c:3584 [inline]
__x64_sys_mount+0x283/0x300 fs/namespace.c:3584
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x35/0x80 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x6e/0xd8
This happens because of a race condition between:
- The 9p client sending an invalid flush request and later cleaning it up;
- The 9p client in p9_read_work() canceled all pending requests.
Thread 1 Thread 2
...
p9_client_create()
...
p9_fd_create()
...
p9_conn_create()
...
// start Thread 2
INIT_WORK(&m->rq, p9_read_work);
p9_read_work()
...
p9_client_rpc()
...
...
p9_conn_cancel()
...
spin_lock(&m->req_lock);
...
p9_fd_cancelled()
...
...
spin_unlock(&m->req_lock);
// status rewrite
p9_client_cb(m->client, req, REQ_STATUS_ERROR)
// first remove
list_del(&req->req_list);
...
spin_lock(&m->req_lock)
...
// second remove
list_del(&req->req_list);
spin_unlock(&m->req_lock)
...
Commit 74d6a5d56629 ("9p/trans_fd: Fix concurrency del of req_list in
p9_fd_cancelled/p9_read_work") fixes a concurrency issue in the 9p filesystem
client where the req_list could be deleted simultaneously by both
p9_read_work and p9_fd_cancelled functions, but for the case where req->status
equals REQ_STATUS_RCVD.
Update the check for req->status in p9_fd_cancelled to skip processing not
just received requests, but anything that is not SENT, as whatever
changed the state from SENT also removed the request from its list.
Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
[updated the check from status == RECV || status == ERROR to status != SENT]
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于net/9p组件中存在双重请求释放，可能导致内存损坏。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2025-40027 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
高级
未找到公开 POC。
登录以生成 AI POC三、漏洞 CVE-2025-40027 的情报信息
请登录查看更多情报信息。
CVE-2025-40027 补丁与修复 (7)
同批安全公告 · Linux · 2025-10-28 · 共 58 条
| CVE-2025-40074 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-40043 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40039 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40058 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40046 | 8.6 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40068 | 8.4 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40075 | 8.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40026 | 7.9 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40040 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40054 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40045 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40047 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40051 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40025 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40061 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40064 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40067 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40069 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40079 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40081 | 7.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 58 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2025-40027
暂无评论