CVE-2025-71110 (CNNVD-202601-2445)

UNKNOWN
中文标题:
Linux kernel 安全漏洞
英文标题:
mm/slub: reset KASAN tag in defer_free() before accessing freed memory
CVSS分数: N/A
发布时间: 2026-01-14 15:05:57
漏洞类型: 其他
状态: PUBLISHED
数据质量分数: 0.30
数据版本: v3
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,该漏洞源于在defer_free中访问已释放内存前未重置KASAN标签,可能导致KASAN释放后使用报告。

英文描述:

In the Linux kernel, the following vulnerability has been resolved: mm/slub: reset KASAN tag in defer_free() before accessing freed memory When CONFIG_SLUB_TINY is enabled, kfree_nolock() calls kasan_slab_free() before defer_free(). On ARM64 with MTE (Memory Tagging Extension), kasan_slab_free() poisons the memory and changes the tag from the original (e.g., 0xf3) to a poison tag (0xfe). When defer_free() then tries to write to the freed object to build the deferred free list via llist_add(), the pointer still has the old tag, causing a tag mismatch and triggering a KASAN use-after-free report: BUG: KASAN: slab-use-after-free in defer_free+0x3c/0xbc mm/slub.c:6537 Write at addr f3f000000854f020 by task kworker/u8:6/983 Pointer tag: [f3], memory tag: [fe] Fix this by calling kasan_reset_tag() before accessing the freed memory. This is safe because defer_free() is part of the allocator itself and is expected to manipulate freed memory for bookkeeping purposes.

CWE类型:
(暂无数据)
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 - < 65d4e5af2a2e82f4fc50d8259aee208fbc6b2c1d - cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*
Linux Linux 6.18 - - cpe:2.3:a:linux:linux:6.18:*:*:*:*:*:*:*
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
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:
2026-01-14 15:05:57
修改时间:
2026-01-14 15:05:57
创建时间:
2026-01-15 06:00:15
更新时间:
2026-01-16 02:48:26
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-2025-71110 2026-01-15 02:17:38 2026-01-15 06:00:15
NVD nvd_CVE-2025-71110 2026-01-15 03:00:07 2026-01-15 06:00:27
CNNVD cnnvd_CNNVD-202601-2445 2026-01-16 02:47:02 2026-01-16 02:48:26
版本与语言
当前版本: v3
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
v3 CNNVD
2026-01-16 02:48:26
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-202601-2445; 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-202601-2445
  • data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
v2 NVD
2026-01-15 06:00:27
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']