CVE-2025-38527 (CNNVD-202508-1944)
中文标题:
Linux kernel 安全漏洞
英文标题:
smb: client: fix use-after-free in cifs_oplock_break
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smb客户端在cifs_oplock_break中存在释放后使用，可能导致崩溃。
英文描述:
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix use-after-free in cifs_oplock_break A race condition can occur in cifs_oplock_break() leading to a use-after-free of the cinode structure when unmounting: cifs_oplock_break() _cifsFileInfo_put(cfile) cifsFileInfo_put_final() cifs_sb_deactive() [last ref, start releasing sb] kill_sb() kill_anon_super() generic_shutdown_super() evict_inodes() dispose_list() evict() destroy_inode() call_rcu(&inode->i_rcu, i_callback) spin_lock(&cinode->open_file_lock) <- OK [later] i_callback() cifs_free_inode() kmem_cache_free(cinode) spin_unlock(&cinode->open_file_lock) <- UAF cifs_done_oplock_break(cinode) <- UAF The issue occurs when umount has already released its reference to the superblock. When _cifsFileInfo_put() calls cifs_sb_deactive(), this releases the last reference, triggering the immediate cleanup of all inodes under RCU. However, cifs_oplock_break() continues to access the cinode after this point, resulting in use-after-free. Fix this by holding an extra reference to the superblock during the entire oplock break operation. This ensures that the superblock and its inodes remain valid until the oplock break completes.
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 | 2429fcf06d3cb962693868ab0a927c9038f12a2d | - | - |
cpe:2.3:a:linux:linux:2429fcf06d3cb962693868ab0a927c9038f12a2d:*:*:*:*:*:*:*
|
| Linux | Linux | 1ee4f2d7cdcd4508cc3cbe3b2622d7177b89da12 | - | - |
cpe:2.3:a:linux:linux:1ee4f2d7cdcd4508cc3cbe3b2622d7177b89da12:*:*:*:*:*:*:*
|
| Linux | Linux | 53fc31a4853e30d6e8f142b824f724da27ff3e40 | - | - |
cpe:2.3:a:linux:linux:53fc31a4853e30d6e8f142b824f724da27ff3e40:*:*:*:*:*:*:*
|
| Linux | Linux | 8092ecc306d81186a64cda42411121f4d35aaff4 | - | - |
cpe:2.3:a:linux:linux:8092ecc306d81186a64cda42411121f4d35aaff4:*:*:*:*:*:*:*
|
| Linux | Linux | ebac4d0adf68f8962bd82fcf483936edd6ec095b | - | - |
cpe:2.3:a:linux:linux:ebac4d0adf68f8962bd82fcf483936edd6ec095b:*:*:*:*:*:*:*
|
| Linux | Linux | 5.1 | - | - |
cpe:2.3:a:linux:linux:5.1:*:*:*:*:*:*:*
|
| linux | linux_kernel | * | - | - |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
| linux | linux_kernel | 5.1 | - | - |
cpe:2.3:o:linux:linux_kernel:5.1:-:*:*:*:*:*:*
|
| linux | linux_kernel | 6.16 | - | - |
cpe:2.3:o:linux:linux_kernel:6.16: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-2025-38527 |
2025-11-11 15:23:18 | 2025-11-11 07:40:28 |
| NVD | nvd_CVE-2025-38527 |
2025-11-11 15:00:59 | 2025-11-11 07:48:17 |
| CNNVD | cnnvd_CNNVD-202508-1944 |
2025-11-11 15:12:54 | 2025-11-11 08:00:05 |
版本与语言
安全公告
变更历史
查看详细变更
- affected_products_count: 6 -> 10
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-202508-1944
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- references_count: 6 -> 7
- data_sources: ['cve'] -> ['cve', 'nvd']