SB2026092589 - Incomplete cleanup in Linux kernel gpu drm driver
Published: September 25, 2026
Security Bulletin ID
SB2026092589
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Incomplete cleanup (CVE-ID: CVE-2026-93284)
CWE-ID: CWE-459 - Incomplete cleanup
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause DMA mappings to remain active.
The vulnerability exists due to improper resource cleanup in drm_pagemap_migrate_unmap_pages() when handling migration errors. A local user can trigger a migration error to cause DMA mappings to remain active.
Remediation
Install update from vendor's website.