Race condition in Linux kernel - CVE-2026-74638
Published: August 24, 2026
Vulnerability identifier: #VU144891
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2026-74638
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a race condition in the v3d drm scheduler timeout handling for V3D hardware queues when handling concurrent scheduler timeouts across queues that share a global reset. A local user can trigger queue timeouts during gpu workload execution to cause a denial of service.
The issue can leave the CL queue credit count inconsistent, resulting in a complete GPU hang and UI freeze.
Affected software
Linux kernel
How to mitigate CVE-2026-74638
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3