CVE-2025-38352
kernel: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 22, 2025
Updated · October 24, 2026
Description
A race condition was found in the Linux kernel’s POSIX CPU timer handling, where handle_posix_cpu_timers() may run concurrently with posix_cpu_timer_del() on an exiting task which could result in use-after-free scenarios. An attacker with local user access could use this flaw to crash or escalate their privileges on a system.
Statement
This CVE is rated with Important severity because it may allow an attacker with local user access to escalate their privileges on a target system.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-416 · Use After Free