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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-38352 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del() If an exiting non-autoreaping task has already passed exit_notify() and calls handle_posix_cpu_timers() from IRQ, it can be reaped by its parent or debugger right after unlock_task_sighand(). If a concurrent posix_cpu_timer_del() runs at that moment, it won't be able to detect timer->it.cpu.firing != 0: cpu_timer_task_rcu() and/or lock_task_sighand() will fail. Add the tsk->exit_state check into run_posix_cpu_timers() to fix this. This fix is not needed if CONFIG_POSIX_CPU_TIMERS_TASK_WORK=y, because exit_task_work() is called before exit_notify(). But the check still makes sense, task_work_add(&tsk->posix_cputimers_work.work) will fail anyway in this case.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/2c72fe18cc5f9f1750f5bc148cf1c94c29e106ff kernel.org
https://git.kernel.org/stable/c/2f3daa04a9328220de46f0d5c919a6c0073a9f0b kernel.org
https://git.kernel.org/stable/c/460188bc042a3f40f72d34b9f7fc6ee66b0b757b kernel.org
https://git.kernel.org/stable/c/764a7a5dfda23f69919441f2eac2a83e7db6e5bb kernel.org
https://git.kernel.org/stable/c/78a4b8e3795b31dae58762bc091bb0f4f74a2200 kernel.org
https://git.kernel.org/stable/c/c076635b3a42771ace7d276de8dc3bc76ee2ba1b kernel.org
https://git.kernel.org/stable/c/c29d5318708e67ac13c1b6fc1007d179fb65b4d7 kernel.org
https://git.kernel.org/stable/c/f90fff1e152dedf52b932240ebbd670d83330eca kernel.org

Weakness Enumeration

CWE-ID CWE Name Source
CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition CISA-ADP  

Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-38352
NVD Published Date:
07/22/2025
NVD Last Modified:
09/02/2025
Source:
kernel.org