CVE-2026-99090
kernel: drm/amdgpu: serialize vblank counter reads against GPU reset
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 26, 2026
Updated · October 27, 2026
Description
A flaw was found in the Linux kernel's AMD GPU driver. A local user could cause a Denial of Service (DoS) or system instability by triggering GPU recovery operations. Due to a race condition, the driver allows vertical blanking (vblank) counter reads from display hardware without proper lock synchronization while a GPU reset is in progress. This unsynchronized access violates driver locking rules and may lead to unexpected hardware states or kernel warnings.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-366 · Race Condition within a Thread