CVE-2025-39737— 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__kmemleak_do_cleanup函数处理大量kmemleak对象时可能导致软锁定。
可能的 ATT&CK 技术 1 AI
T1499 · Endpoint Denial of Service影响版本矩阵 20
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 2abd839aa7e615f2bbc50c8ba7deb9e40d186768< 9f1f4e95031f84867c5821540466d62f88dab8ca |
affected |
2abd839aa7e615f2bbc50c8ba7deb9e40d186768< 1ef72a7fedc5bca70e8cc980985790de10d407aa |
affected | ||
2abd839aa7e615f2bbc50c8ba7deb9e40d186768< a04de4c40aab9b338dfa989cf4aec70fd187eeb2 |
affected | ||
2abd839aa7e615f2bbc50c8ba7deb9e40d186768< f014c10d190b92aad366e56b445daffcd1c075e4 |
affected | ||
2abd839aa7e615f2bbc50c8ba7deb9e40d186768< e21a3ddd58733ce31afcb1e5dc3cb80a4b5bc29b |
affected | ||
2abd839aa7e615f2bbc50c8ba7deb9e40d186768< 8d2d22a55ffe35c38e69795468a7addd1a80e9ce |
affected | ||
2abd839aa7e615f2bbc50c8ba7deb9e40d186768< 926092268efdf1ed7b55cf486356c74a9e7710d1 |
affected | ||
2abd839aa7e615f2bbc50c8ba7deb9e40d186768< 9b80430c194e4a114dc663c1025d56b4f3d0153d |
affected | ||
| … +12 条更多 | |||
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一、 漏洞 CVE-2025-39737 基础信息
漏洞信息
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Vulnerability Title
mm/kmemleak: avoid soft lockup in __kmemleak_do_cleanup()
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
mm/kmemleak: avoid soft lockup in __kmemleak_do_cleanup()
A soft lockup warning was observed on a relative small system x86-64
system with 16 GB of memory when running a debug kernel with kmemleak
enabled.
watchdog: BUG: soft lockup - CPU#8 stuck for 33s! [kworker/8:1:134]
The test system was running a workload with hot unplug happening in
parallel. Then kemleak decided to disable itself due to its inability to
allocate more kmemleak objects. The debug kernel has its
CONFIG_DEBUG_KMEMLEAK_MEM_POOL_SIZE set to 40,000.
The soft lockup happened in kmemleak_do_cleanup() when the existing
kmemleak objects were being removed and deleted one-by-one in a loop via a
workqueue. In this particular case, there are at least 40,000 objects
that need to be processed and given the slowness of a debug kernel and the
fact that a raw_spinlock has to be acquired and released in
__delete_object(), it could take a while to properly handle all these
objects.
As kmemleak has been disabled in this case, the object removal and
deletion process can be further optimized as locking isn't really needed.
However, it is probably not worth the effort to optimize for such an edge
case that should rarely happen. So the simple solution is to call
cond_resched() at periodic interval in the iteration loop to avoid soft
lockup.
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，该漏洞源于__kmemleak_do_cleanup函数处理大量kmemleak对象时可能导致软锁定。
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-2025-39737 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 · 2025-09-11 · 共 54 条
| CVE-2025-39758 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-39761 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39750 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39790 | 8.4 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39740 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39779 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39780 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39791 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39785 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39787 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39786 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39770 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39738 | 7.3 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39789 | 7.3 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39776 | 7.0 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39773 | Linux kernel 安全漏洞 | |
| CVE-2025-39772 | Linux kernel 安全漏洞 | |
| CVE-2025-39771 | Linux kernel 安全漏洞 | |
| CVE-2025-39768 | Linux kernel 安全漏洞 | |
| CVE-2025-39769 | Linux kernel 安全漏洞 |
显示前 20 条，共 54 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2025-39737
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