CVE-2026-89820
kernel: drm/amd/display: fix dc_lock leak on GPU reset error paths
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 16, 2026
Updated · October 29, 2026
Description
A flaw was found in the Linux kernel's drm/amd/display component. During a GPU reset, if certain functions fail after acquiring a dc_lock, the lock is not properly released. This can lead to a dc_lock leak, causing subsequent attempts to acquire the lock to hang, resulting in a Denial of Service (DoS) for the system.
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 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-772 · Missing Release of Resource after Effective Lifetime