SB20260917152 - Incomplete cleanup in Linux kernel drm ttm driver
Published: September 17, 2026
Security Bulletin ID
SB20260917152
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Incomplete cleanup (CVE-ID: CVE-2026-89815)
CWE-ID: CWE-459 - Incomplete cleanup
CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to compromise confidentiality, integrity, and availability.
The vulnerability exists due to incomplete cleanup of restore state in ttm_pool_restore_and_alloc() in the DRM TTM memory-management component when completing a backup restore operation. A local user can initiate subsequent backup and restore flows to compromise confidentiality, integrity, and availability.
Remediation
Install update from vendor's website.