CVE-2025-38031
kernel: padata: do not leak refcount in reorder_work
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 18, 2025
Updated · August 3, 2026
Description
A flaw was found in the Linux kernel's padata component, which handles parallel data processing. This vulnerability involves a reference count leak within the reorder_work function. When a task is already in the processing queue, its associated reference count is incorrectly increased but never decreased. This leads to a buildup of unreferenced objects in memory, which can eventually exhaust system resources and cause a Denial of Service (DoS), making the system unavailable.
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
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-911 · Improper Update of Reference Count