CVE-2025-38614— 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，该漏洞源于递归深度限制不当，可能导致资源耗尽。
可能的 ATT&CK 技术 1 AI
T1496 · Resource Hijacking影响版本矩阵 26
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 22bacca48a1755f79b7e0f192ddb9fbb7fc6e64e< 71379495ab70eaba19224bd71b5b9b399eb85e04 |
affected |
22bacca48a1755f79b7e0f192ddb9fbb7fc6e64e< 1b13b033062824495554e836a1ff5f85ccf6b039 |
affected | ||
22bacca48a1755f79b7e0f192ddb9fbb7fc6e64e< 2a0c0c974bea9619c6f41794775ae4b97530e0e6 |
affected | ||
22bacca48a1755f79b7e0f192ddb9fbb7fc6e64e< 7a2125962c42d5336ca0495a9ce4cb38a63e9161 |
affected | ||
22bacca48a1755f79b7e0f192ddb9fbb7fc6e64e< ea5f97dbdcb1651581a22bd10afd2f0dd9dc11d6 |
affected | ||
22bacca48a1755f79b7e0f192ddb9fbb7fc6e64e< 3542c90797bc3ab83ebab54b737d751cf3682036 |
affected | ||
22bacca48a1755f79b7e0f192ddb9fbb7fc6e64e< f2e467a48287c868818085aa35389a224d226732 |
affected | ||
8216e1a0d47cae06a75c42346f19dffe14e42d57 |
affected | ||
| … +18 条更多 | |||
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一、 漏洞 CVE-2025-38614 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
eventpoll: Fix semi-unbounded recursion
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
eventpoll: Fix semi-unbounded recursion
Ensure that epoll instances can never form a graph deeper than
EP_MAX_NESTS+1 links.
Currently, ep_loop_check_proc() ensures that the graph is loop-free and
does some recursion depth checks, but those recursion depth checks don't
limit the depth of the resulting tree for two reasons:
- They don't look upwards in the tree.
- If there are multiple downwards paths of different lengths, only one of
the paths is actually considered for the depth check since commit
28d82dc1c4ed ("epoll: limit paths").
Essentially, the current recursion depth check in ep_loop_check_proc() just
serves to prevent it from recursing too deeply while checking for loops.
A more thorough check is done in reverse_path_check() after the new graph
edge has already been created; this checks, among other things, that no
paths going upwards from any non-epoll file with a length of more than 5
edges exist. However, this check does not apply to non-epoll files.
As a result, it is possible to recurse to a depth of at least roughly 500,
tested on v6.15. (I am unsure if deeper recursion is possible; and this may
have changed with commit 8c44dac8add7 ("eventpoll: Fix priority inversion
problem").)
To fix it:
1. In ep_loop_check_proc(), note the subtree depth of each visited node,
and use subtree depths for the total depth calculation even when a subtree
has already been visited.
2. Add ep_get_upwards_depth_proc() for similarly determining the maximum
depth of an upwards walk.
3. In ep_loop_check(), use these values to limit the total path length
between epoll nodes to EP_MAX_NESTS edges.
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，该漏洞源于递归深度限制不当，可能导致资源耗尽。
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-2025-38614 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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同批安全公告 · Linux · 2025-08-19 · 共 59 条
| CVE-2025-38561 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-38566 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-38560 | 9.3 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-38601 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38600 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38599 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38592 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38608 | 8.6 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38574 | 8.6 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38571 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38582 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38596 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38604 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38607 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38615 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38598 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38586 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38595 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38580 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38579 | 7.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 59 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2025-38614
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