CVE-2025-39737 (CNNVD-202509-1646)
中文标题:
Linux kernel 安全漏洞
英文标题:
mm/kmemleak: avoid soft lockup in __kmemleak_do_cleanup()
漏洞描述
中文描述:
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。
英文描述:
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.
CWE类型:
标签:
受影响产品
| 厂商 | 产品 | 版本 | 版本范围 | 平台 | CPE |
|---|---|---|---|---|---|
| Linux | Linux | - | < 9f1f4e95031f84867c5821540466d62f88dab8ca | - |
cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*
|
| Linux | Linux | 5.4 | - | - |
cpe:2.3:a:linux:linux:5.4:*:*:*:*:*:*:*
|
| linux | linux_kernel | * | - | - |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
| linux | linux_kernel | 5.4 | - | - |
cpe:2.3:o:linux:linux_kernel:5.4:-:*:*:*:*:*:*
|
| linux | linux_kernel | 6.17 | - | - |
cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*
|
| debian | debian_linux | 11.0 | - | - |
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
|
解决方案
中文解决方案:
英文解决方案:
临时解决方案:
参考链接
cve.org
cve.org
cve.org
cve.org
cve.org
cve.org
cve.org
cve.org
cve.org
nvd.nist.gov
nvd.nist.gov
CVSS评分详情
时间信息
利用信息
数据源详情
| 数据源 | 记录ID | 版本 | 提取时间 |
|---|---|---|---|
| CVE | cve_CVE-2025-39737 |
2025-11-11 15:23:19 | 2025-11-11 07:40:29 |
| NVD | nvd_CVE-2025-39737 |
2025-11-11 15:01:02 | 2025-11-11 07:48:18 |
| CNNVD | cnnvd_CNNVD-202509-1646 |
2025-11-11 15:12:56 | 2025-11-11 08:00:10 |
版本与语言
安全公告
变更历史
查看详细变更
- affected_products_count: 2 -> 6
查看详细变更
- affected_products_count: 1 -> 2
查看详细变更
- vulnerability_type: 未提取 -> 其他
- severity: SeverityLevel.MEDIUM -> SeverityLevel.UNKNOWN
- cvss_score: 未提取 -> 0.0
- cnnvd_id: 未提取 -> CNNVD-202509-1646
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- affected_products_count: 10 -> 1
- references_count: 9 -> 11
- data_sources: ['cve'] -> ['cve', 'nvd']