PoC Index85,101 CVEs with PoCs

CVE-2025-38352

posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()

KEVHIGH 7.8EPSS 1.3%

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() andcalls handle_posix_cpu_timers() from IRQ, it can be reaped by its parentor debugger right after unlock_task_sighand().If a concurrent posix_cpu_timer_del() runs at that moment, it won't beable to detect timer->it.cpu.firing != 0: cpu_timer_task_rcu() and/orlock_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, becauseexit_task_work() is called before exit_notify(). But the check stillmakes sense, task_work_add(&tsk->posix_cputimers_work.work) will failanyway in this case.

Affected
Linux
CVSS v3.1 CNA
7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
1.34% chance of exploitation in the next 30 days, 71st percentile
CISA KEV
added 2025-09-04
Published
2025-07-22
Updated
2026-09-08

Proof-of-concept exploits (6)

Security advisories

References

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