SB20260406114 - Memory leak in Linux kernel drm xe driver
Published: April 6, 2026
Security Bulletin ID
SB20260406114
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Memory leak (CVE-ID: CVE-2026-23421)
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a memory leak in drm/xe configfs device release handling when removing a configfs device. A local user can trigger device removal after allocating ctx_restore_mid_bb to cause a denial of service.
The issue occurs because ctx_restore_mid_bb[0].cs is not freed, which can leak memory during configfs device removal.
Remediation
Install update from vendor's website.