Incomplete cleanup in Linux kernel - CVE-2026-93284
Published: September 25, 2026
Vulnerability identifier: #VU152113
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-93284
CWE-ID: CWE-459
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
How to mitigate CVE-2026-93284
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3