Always-Incorrect Control Flow Implementation in Linux kernel - CVE-2026-53377
Published: July 21, 2026
Vulnerability identifier: #VU138892
CSH Severity: Low
CVSS v4.0: 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
CVE-ID: CVE-2026-53377
CWE-ID: CWE-670
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper recovery handling in recover_worker in the drm/msm GPU driver when processing a hung GPU ring with no additional queued work. A local user can trigger a GPU hang to cause a denial of service.
The issue can occur when a single submitted job hangs a ring and the GPU remains in a hung state instead of being recovered.
How to mitigate CVE-2026-53377
Install security update from vendor's repository.