Improper locking in Linux kernel - CVE-2026-80919
Published: September 9, 2026
Vulnerability identifier: #VU148745
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-2026-80919
CWE-ID: CWE-667
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 improper locking in amdgpu_devcoredump_format() when dumping instruction buffer contents from a hung GPU job. A local user can trigger devcoredump processing for a hung GPU job whose instruction-buffer buffer object shares its dma_resv with the VM root page directory to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-80919
Install security update from vendor's repository.