SB2026040676 - Use-after-free in Linux kernel base power driver

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Main Vulnerability Database SB2026040676

SB2026040676 - Use-after-free in Linux kernel base power driver

Published: April 6, 2026

Security Bulletin ID SB2026040676
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Use-after-free (CVE-ID: CVE-2026-23452)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in pm_runtime_work() when handling device removal during runtime power management. A local user can trigger a race condition involving device removal to cause a denial of service.

The issue is caused by dereferencing the dev->parent pointer after the parent device has been freed. It is reproducible sporadically with blktest block/001 and results in a KASAN-reported slab-use-after-free.


Remediation

Install update from vendor's website.

References