CVE-2025-38352
HIGH CISA KEVCVSS 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
- 9/4/2025
- Patch Due Date
- 9/25/2025
- Required Action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Technical Details
- CVSS v3 Vector
- 3.1
- Published
- 7/22/2025
- Last Modified
- 1/8/2026
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.
Is CVE-2025-38352 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.