CVE-2026-80944— 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基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于wifi mwifiex同步命令将调用者提供的栈缓冲区保存在cmd_node->data_buf，当wait_event_interruptible_timeout()被中断后调用者返回并释放栈对象，延迟的固件响应可能通过该指针写入已失效的栈地址，导致栈损坏和内核崩溃。
可能的 ATT&CK 技术 1 AI
T1190 · Exploit Public-Facing Application影响版本矩阵 18
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 3d026d09b28dda24777129a931634949c75a9181< 8c67b8c50286e0cb7f18d667e6a37a2ec6e08ff9 |
affected |
3d026d09b28dda24777129a931634949c75a9181< 9024c7729eb523cf4f3a4203966d3a4aaabf030d |
affected | ||
3d026d09b28dda24777129a931634949c75a9181< 9e06c9c8a1f10c55d9bc5d139656d58795e64483 |
affected | ||
3d026d09b28dda24777129a931634949c75a9181< f2134d6ff30cd6e1bf63d6b0a5d8e0839f0168b3 |
affected | ||
3d026d09b28dda24777129a931634949c75a9181< 20ee9c03f261bf6ac59331e2ca7b46b23646412a |
affected | ||
3d026d09b28dda24777129a931634949c75a9181< b1bbeb8970eeb6c6bf3cd5314138103f7b69446d |
affected | ||
3d026d09b28dda24777129a931634949c75a9181< d29a165588b6a0cf7a38db5cbd602aef7ef8c658 |
affected | ||
3d026d09b28dda24777129a931634949c75a9181< ef06882c7d8a7400b67d0d003b1008093dd589ed |
affected | ||
| … +10 条更多 | |||
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一、 漏洞 CVE-2026-80944 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！
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Vulnerability Title
wifi: mwifiex: Detach sync cmd buffer on interrupted wait
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
wifi: mwifiex: Detach sync cmd buffer on interrupted wait
mwifiex synchronous commands keep the caller-provided data buffer in
cmd_node->data_buf. Several callers pass stack-allocated objects there.
If wait_event_interruptible_timeout() is interrupted, the caller can
return and release that stack object while the firmware command is still
the current command. A late firmware response then reaches the normal
response handler, which can copy data through cmd_node->data_buf into the
stale stack address.
This fixes a stack corruption observed during repeated association and
disassociation cycles. The panic trace showed the command wait being
interrupted immediately before a bad pointer dereference:
cmd_wait_q terminated: -512
Unable to handle kernel paging request at virtual address 002c583837384662
Kernel panic - not syncing: stack-protector: Kernel stack is corrupted
...
Tainted: [M]=MACHINE_CHECK
The fault address decodes as little-endian ASCII:
0x002c583837384662 -> "bF878X,\0"
which is a fragment of the VERSION_EXT firmware string exposed as
debugfs "verext":
w8997o-V4, RF878X, FP92, 16.92.21.p153.7
The same runs also showed corrupted control data containing:
0x2400372e333531 -> "153.7\0$"
which is the tail of the same VERSION_EXT string. This points at a late
VERSION_EXT response writing through a stale stack-backed data_buf after
the interrupted wait returned.
After cancelling pending commands on an interrupted or timed-out wait,
detach the caller-owned data buffer from the still-current command. This
preserves the existing command cancellation behaviour while preventing a
late response from writing through a pointer whose lifetime ended with the
waiting caller.
Tested on an i.MX8MP board using an 88W8997.
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基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于wifi mwifiex同步命令将调用者提供的栈缓冲区保存在cmd_node->data_buf，当wait_event_interruptible_timeout()被中断后调用者返回并释放栈对象，延迟的固件响应可能通过该指针写入已失效的栈地址，导致栈损坏和内核崩溃。
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-2026-80944 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
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CVE-2026-80944 补丁与修复 (7)
CVE-2026-80944 其他参考 (1)
同批安全公告 · Linux · 2026-09-11 · 共 431 条
| CVE-2026-89688 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89656 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89655 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89658 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89660 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89659 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89662 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89669 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89674 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89675 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89676 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89677 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89681 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89686 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89478 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89479 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89702 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89703 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89482 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89708 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
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IV. Related Vulnerabilities
V. Comments for CVE-2026-80944
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