Improper locking in Linux kernel - CVE-2026-43305
Published: May 9, 2026
Vulnerability identifier: #VU130883
CSH Severity: Low
CVSSv4.0: 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-2026-43305
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper lock management in the drm/amd/display hardware sequencing fast path when using the DMUB HW lock on ASICs without FAMS support. A local user can trigger the fast path to cause a denial of service.
Exploitation is limited to systems using the affected fast path on ASICs without FAMS support.
Remediation
Install security update from vendor's repository.