CVE-2025-38627 (CNNVD-202508-2788)

UNKNOWN
中文标题:
Linux kernel 安全漏洞
英文标题:
f2fs: compress: fix UAF of f2fs_inode_info in f2fs_free_dic
CVSS分数: N/A
发布时间: 2025-08-22 16:00:35
漏洞类型: 其他
状态: PUBLISHED
数据质量分数: 0.40
数据版本: v5
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f2fs_free_dic未正确处理异步释放，可能导致释放后重用。

英文描述:

In the Linux kernel, the following vulnerability has been resolved: f2fs: compress: fix UAF of f2fs_inode_info in f2fs_free_dic The decompress_io_ctx may be released asynchronously after I/O completion. If this file is deleted immediately after read, and the kworker of processing post_read_wq has not been executed yet due to high workloads, It is possible that the inode(f2fs_inode_info) is evicted and freed before it is used f2fs_free_dic. The UAF case as below: Thread A Thread B - f2fs_decompress_end_io - f2fs_put_dic - queue_work add free_dic work to post_read_wq - do_unlink - iput - evict - call_rcu This file is deleted after read. Thread C kworker to process post_read_wq - rcu_do_batch - f2fs_free_inode - kmem_cache_free inode is freed by rcu - process_scheduled_works - f2fs_late_free_dic - f2fs_free_dic - f2fs_release_decomp_mem read (dic->inode)->i_compress_algorithm This patch store compress_algorithm and sbi in dic to avoid inode UAF. In addition, the previous solution is deprecated in [1] may cause system hang. [1] https://lore.kernel.org/all/c36ab955-c8db-4a8b-a9d0-f07b5f426c3f@kernel.org

CWE类型:
CWE-416
标签:
（暂无数据）
受影响产品
厂商 产品 版本 版本范围 平台 CPE
Linux Linux - < 8fae5b6addd5f6895e03797b56e3c7b9f9cd15c9 - cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*
Linux Linux 6.0 - - cpe:2.3:a:linux:linux:6.0:*:*:*:*:*:*:*
linux linux_kernel * - - cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
解决方案
中文解决方案:
（暂无数据）
英文解决方案:
（暂无数据）
临时解决方案:
（暂无数据）
参考链接
无标题 OTHER
cve.org
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无标题 OTHER
cve.org
访问
无标题 OTHER
cve.org
访问
CVSS评分详情
暂无CVSS评分信息
时间信息
发布时间:
2025-08-22 16:00:35
修改时间:
2025-09-29 05:55:05
创建时间:
2025-11-11 15:40:28
更新时间:
2026-01-12 02:27:45
利用信息
暂无可利用代码信息
数据源详情
数据源 记录ID 版本 提取时间
CVE cve_CVE-2025-38627 2025-11-11 15:23:18 2025-11-11 07:40:28
NVD nvd_CVE-2025-38627 2025-11-11 15:01:00 2025-11-11 07:48:17
CNNVD cnnvd_CNNVD-202508-2788 2025-11-11 15:12:54 2025-11-11 08:00:07
版本与语言
当前版本: v5
主要语言: EN
支持语言:
EN ZH
安全公告
暂无安全公告信息
变更历史
v5 NVD
2026-01-12 02:27:45
affected_products_count: 2 → 3
查看详细变更
  • affected_products_count: 2 -> 3
v4 CVE
2026-01-12 02:11:41
references_count: 2 → 3
查看详细变更
  • references_count: 2 -> 3
v3 CNNVD
2025-11-11 16:00:07
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-202508-2788; data_sources: ['cve', 'nvd'] → ['cnnvd', 'cve', 'nvd']
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-202508-2788
  • data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
v2 NVD
2025-11-11 15:48:17
affected_products_count: 3 → 2; data_sources: ['cve'] → ['cve', 'nvd']
查看详细变更
  • affected_products_count: 3 -> 2
  • data_sources: ['cve'] -> ['cve', 'nvd']