CVE-2025-38352

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Source
https://cve.org/CVERecord?id=CVE-2025-38352
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38352.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-38352
Downstream
Related
Published
2025-07-22T08:04:25Z
Modified
2026-09-10T03:30:16Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()
Details

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.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38352.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0bdd2ed4138ec04e09b4f8165981efc99e439f55
Fixed
78a4b8e3795b31dae58762bc091bb0f4f74a2200
Fixed
c076635b3a42771ace7d276de8dc3bc76ee2ba1b
Fixed
2f3daa04a9328220de46f0d5c919a6c0073a9f0b
Fixed
764a7a5dfda23f69919441f2eac2a83e7db6e5bb
Fixed
2c72fe18cc5f9f1750f5bc148cf1c94c29e106ff
Fixed
c29d5318708e67ac13c1b6fc1007d179fb65b4d7
Fixed
460188bc042a3f40f72d34b9f7fc6ee66b0b757b
Fixed
f90fff1e152dedf52b932240ebbd670d83330eca

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38352.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.6.36
Fixed
5.4.295
Type
ECOSYSTEM
Events
Introduced
5.5.0
Fixed
5.10.239
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.186
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.142
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.94
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.34
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.15.3

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38352.json"