CVE-2025-39840 (CNNVD-202509-3129)
中文标题:
Linux kernel 安全漏洞
英文标题:
audit: fix out-of-bounds read in audit_compare_dname_path()
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audit_compare_dname_path函数中缺少路径长度检查，可能导致越界读取。
英文描述:
In the Linux kernel, the following vulnerability has been resolved: audit: fix out-of-bounds read in audit_compare_dname_path() When a watch on dir=/ is combined with an fsnotify event for a single-character name directly under / (e.g., creating /a), an out-of-bounds read can occur in audit_compare_dname_path(). The helper parent_len() returns 1 for "/". In audit_compare_dname_path(), when parentlen equals the full path length (1), the code sets p = path + 1 and pathlen = 1 - 1 = 0. The subsequent loop then dereferences p[pathlen - 1] (i.e., p[-1]), causing an out-of-bounds read. Fix this by adding a pathlen > 0 check to the while loop condition to prevent the out-of-bounds access. [PM: subject tweak, sign-off email fixes]
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 | - | < 9735a9dcc307427e7d6336c54171682f1bac9789 | - |
cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*
|
| Linux | Linux | 6.14 | - | - |
cpe:2.3:a:linux:linux:6.14:*:*:*:*:*:*:*
|
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-2025-39840 |
2025-11-11 15:23:19 | 2025-11-11 07:40:29 |
| NVD | nvd_CVE-2025-39840 |
2025-11-11 15:01:03 | 2025-11-11 07:48:18 |
| CNNVD | cnnvd_CNNVD-202509-3129 |
2025-11-11 15:12:58 | 2025-11-11 08:00:12 |
版本与语言
安全公告
变更历史
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-202509-3129
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- affected_products_count: 3 -> 2
- data_sources: ['cve'] -> ['cve', 'nvd']