CVE-2025-39819 (CNNVD-202509-2529)
中文标题:
Linux kernel 安全漏洞
英文标题:
fs/smb: Fix inconsistent refcnt update
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smb2_compound_op函数中存在不一致的引用计数更新，可能导致资源泄漏。
英文描述:
In the Linux kernel, the following vulnerability has been resolved: fs/smb: Fix inconsistent refcnt update A possible inconsistent update of refcount was identified in `smb2_compound_op`. Such inconsistent update could lead to possible resource leaks. Why it is a possible bug: 1. In the comment section of the function, it clearly states that the reference to `cfile` should be dropped after calling this function. 2. Every control flow path would check and drop the reference to `cfile`, except the patched one. 3. Existing callers would not handle refcount update of `cfile` if -ENOMEM is returned. To fix the bug, an extra goto label "out" is added, to make sure that the cleanup logic would always be respected. As the problem is caused by the allocation failure of `vars`, the cleanup logic between label "finished" and "out" can be safely ignored. According to the definition of function `is_replayable_error`, the error code of "-ENOMEM" is not recoverable. Therefore, the replay logic also gets ignored.
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 | - | < 3fc11ff13fbc2749871d6ac2141685cf54699997 | - |
cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*
|
| Linux | Linux | 5.8 | - | - |
cpe:2.3:a:linux:linux:5.8:*:*:*:*:*:*:*
|
| linux | linux_kernel | * | - | - |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
| 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:
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-2025-39819 |
2025-11-11 15:23:19 | 2025-11-11 07:40:29 |
| NVD | nvd_CVE-2025-39819 |
2025-11-11 15:01:03 | 2025-11-11 07:48:18 |
| CNNVD | cnnvd_CNNVD-202509-2529 |
2025-11-11 15:12:57 | 2025-11-11 08:00:11 |
版本与语言
安全公告
变更历史
查看详细变更
- affected_products_count: 2 -> 5
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-202509-2529
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- affected_products_count: 6 -> 1
- references_count: 5 -> 6
- data_sources: ['cve'] -> ['cve', 'nvd']