CVE-2025-71080 (CNNVD-202601-2187)

UNKNOWN
中文标题:
Linux kernel 安全漏洞
英文标题:
ipv6: fix a BUG in rt6_get_pcpu_route() under PREEMPT_RT
CVSS分数: N/A
发布时间: 2026-01-13 15:34:44
漏洞类型: 其他
状态: PUBLISHED
数据质量分数: 0.40
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rt6_get_pcpu_route在PREEMPT_RT下存在竞争条件,可能导致内核崩溃。

英文描述:

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix a BUG in rt6_get_pcpu_route() under PREEMPT_RT On PREEMPT_RT kernels, after rt6_get_pcpu_route() returns NULL, the current task can be preempted. Another task running on the same CPU may then execute rt6_make_pcpu_route() and successfully install a pcpu_rt entry. When the first task resumes execution, its cmpxchg() in rt6_make_pcpu_route() will fail because rt6i_pcpu is no longer NULL, triggering the BUG_ON(prev). It's easy to reproduce it by adding mdelay() after rt6_get_pcpu_route(). Using preempt_disable/enable is not appropriate here because ip6_rt_pcpu_alloc() may sleep. Fix this by handling the cmpxchg() failure gracefully on PREEMPT_RT: free our allocation and return the existing pcpu_rt installed by another task. The BUG_ON is replaced by WARN_ON_ONCE for non-PREEMPT_RT kernels where such races should not occur.

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 - < 1dc33ad0867325f8d2c6d7b2a6f542d4f3121f66 - cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*
Linux Linux 6.12 - - cpe:2.3:a:linux:linux:6.12:*:*:*:*:*:*:*
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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cve.org
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cve.org
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CVSS评分详情
暂无CVSS评分信息
时间信息
发布时间:
2026-01-13 15:34:44
修改时间:
2026-01-13 15:34:44
创建时间:
2026-01-14 06:08:12
更新时间:
2026-01-16 02:48:23
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-2025-71080 2026-01-14 02:22:02 2026-01-14 06:08:12
NVD nvd_CVE-2025-71080 2026-01-14 03:00:13 2026-01-14 06:14:35
CNNVD cnnvd_CNNVD-202601-2187 2026-01-15 01:52:30 2026-01-15 01:53:19
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
2026-01-15 01:53:19
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-202601-2187; 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-202601-2187
  • data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
v2 NVD
2026-01-14 06:14:35
affected_products_count: 4 → 2; data_sources: ['cve'] → ['cve', 'nvd']
查看详细变更
  • affected_products_count: 4 -> 2
  • data_sources: ['cve'] -> ['cve', 'nvd']