CVE-2025-38352
CVSS v3
7.4
HIGH
EPSS Score
0.1 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
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
CISA Known Exploited Vulnerability
- Date Added
- 2025-09-04
- Patch Due Date
- 2025-09-25
- Ransomware Use
- Unknown
Technical details
- CVSS v3 Vector
- 3.1
- Published
- 2025-07-22
- Last Modified
- 2026-01-08
Frequently asked questions
What is CVE-2025-38352?
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
Is CVE-2025-38352 actively exploited?
Yes. CVE-2025-38352 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 9/25/2025.
What is the CVSS score for CVE-2025-38352?
CVE-2025-38352 has a CVSS v3 base score of 7.4 (HIGH severity), with vector string 3.1.
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