CVE-2024-43863— 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。攻击者利用该漏洞会导致死锁问题。
可能的 ATT&CK 技术 1 AI
T1055 · Process Injection影响版本矩阵 14
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 2298e804e96eb3635c39519c8287befd92460303< 9908dc0d2ef0e4aec8a242c098455729c0e2f017 |
affected |
2298e804e96eb3635c39519c8287befd92460303< 9e20d028d8d1deb1e7fed18f22ffc01669cf3237 |
affected | ||
2298e804e96eb3635c39519c8287befd92460303< 3b933b16c996af8adb6bc1b5748a63dfb41a82bc |
affected | ||
2298e804e96eb3635c39519c8287befd92460303< a8943969f9ead2fd3044fc826140a21622ef830e |
affected | ||
2298e804e96eb3635c39519c8287befd92460303< c98ab18b9f315ff977c2c65d7c71298ef98be8e3 |
affected | ||
2298e804e96eb3635c39519c8287befd92460303< e58337100721f3cc0c7424a18730e4f39844934f |
affected | ||
3.18 |
affected | ||
< 3.18 |
unaffected | ||
| … +6 条更多 | |||
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一、 漏洞 CVE-2024-43863 基础信息
漏洞信息
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Vulnerability Title
drm/vmwgfx: Fix a deadlock in dma buf fence polling
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
drm/vmwgfx: Fix a deadlock in dma buf fence polling
Introduce a version of the fence ops that on release doesn't remove
the fence from the pending list, and thus doesn't require a lock to
fix poll->fence wait->fence unref deadlocks.
vmwgfx overwrites the wait callback to iterate over the list of all
fences and update their status, to do that it holds a lock to prevent
the list modifcations from other threads. The fence destroy callback
both deletes the fence and removes it from the list of pending
fences, for which it holds a lock.
dma buf polling cb unrefs a fence after it's been signaled: so the poll
calls the wait, which signals the fences, which are being destroyed.
The destruction tries to acquire the lock on the pending fences list
which it can never get because it's held by the wait from which it
was called.
Old bug, but not a lot of userspace apps were using dma-buf polling
interfaces. Fix those, in particular this fixes KDE stalls/deadlock.
来源: CVE Program / CVE List V5
CVSS Information
N/A
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。攻击者利用该漏洞会导致死锁问题。
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-2024-43863 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2024-43863 其他参考 (5)
同批安全公告 · Linux · 2024-08-20 · 共 8 条
| CVE-2024-43864 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-43861 | Linux kernel 安全漏洞 | |
| CVE-2024-43862 | Linux kernel 安全漏洞 | |
| CVE-2024-43865 | Linux kernel 安全漏洞 | |
| CVE-2024-43866 | Linux kernel 安全漏洞 | |
| CVE-2024-43867 | Linux kernel 安全漏洞 | |
| CVE-2024-43868 | Linux kernel 安全漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2024-43863
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