CVE-2024-53140— 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netlink套接字在关闭时未能正确终止正在进行的数据转储操作，可能导致资源未正确释放。
影响版本矩阵 22
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | ed5d7788a934a4b6d6d025e948ed4da496b4f12e< 114a61d8d94ae3a43b82446cf737fd757021b834 |
affected |
ed5d7788a934a4b6d6d025e948ed4da496b4f12e< 598c956b62699c3753929602560d8df322e60559 |
affected | ||
ed5d7788a934a4b6d6d025e948ed4da496b4f12e< 6e3f2c512d2b7dbd247485b1dd9e43e4210a18f4 |
affected | ||
ed5d7788a934a4b6d6d025e948ed4da496b4f12e< d2fab3d66cc16cfb9e3ea1772abe6b79b71fa603 |
affected | ||
ed5d7788a934a4b6d6d025e948ed4da496b4f12e< 4e87a52133284afbd40fb522dbf96e258af52a98 |
affected | ||
ed5d7788a934a4b6d6d025e948ed4da496b4f12e< bbc769d2fa1b8b368c5fbe013b5b096afa3c05ca |
affected | ||
ed5d7788a934a4b6d6d025e948ed4da496b4f12e< 176c41b3ca9281a9736b67c6121b03dbf0c8c08f |
affected | ||
ed5d7788a934a4b6d6d025e948ed4da496b4f12e< 1904fb9ebf911441f90a68e96b22aa73e4410505 |
affected | ||
| … +14 条更多 | |||
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一、 漏洞 CVE-2024-53140 基础信息
漏洞信息
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Vulnerability Title
netlink: terminate outstanding dump on socket close
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
netlink: terminate outstanding dump on socket close
Netlink supports iterative dumping of data. It provides the families
the following ops:
- start - (optional) kicks off the dumping process
- dump - actual dump helper, keeps getting called until it returns 0
- done - (optional) pairs with .start, can be used for cleanup
The whole process is asynchronous and the repeated calls to .dump
don't actually happen in a tight loop, but rather are triggered
in response to recvmsg() on the socket.
This gives the user full control over the dump, but also means that
the user can close the socket without getting to the end of the dump.
To make sure .start is always paired with .done we check if there
is an ongoing dump before freeing the socket, and if so call .done.
The complication is that sockets can get freed from BH and .done
is allowed to sleep. So we use a workqueue to defer the call, when
needed.
Unfortunately this does not work correctly. What we defer is not
the cleanup but rather releasing a reference on the socket.
We have no guarantee that we own the last reference, if someone
else holds the socket they may release it in BH and we're back
to square one.
The whole dance, however, appears to be unnecessary. Only the user
can interact with dumps, so we can clean up when socket is closed.
And close always happens in process context. Some async code may
still access the socket after close, queue notification skbs to it etc.
but no dumps can start, end or otherwise make progress.
Delete the workqueue and flush the dump state directly from the release
handler. Note that further cleanup is possible in -next, for instance
we now always call .done before releasing the main module reference,
so dump doesn't have to take a reference of its own.
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netlink套接字在关闭时未能正确终止正在进行的数据转储操作，可能导致资源未正确释放。
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-2024-53140 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2024-53140 补丁与修复 (8)
同批安全公告 · Linux · 2024-12-04 · 共 16 条
| CVE-2024-53138 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-53135 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-53125 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-53127 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-53133 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-53139 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-53136 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-53126 | 7.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-53128 | Linux kernel 安全漏洞 | |
| CVE-2024-53129 | Linux kernel 安全漏洞 | |
| CVE-2024-53130 | Linux kernel 安全漏洞 | |
| CVE-2024-53131 | Linux kernel 安全漏洞 | |
| CVE-2024-53132 | Linux kernel 安全漏洞 | |
| CVE-2024-53134 | Linux kernel 安全漏洞 | |
| CVE-2024-53137 | Linux kernel 安全漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2024-53140
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