CVE-2025-40354
kernel: Linux kernel: Privilege escalation in AMD display driver
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 16, 2025
Updated · August 14, 2026
Description
A flaw was found in the Linux kernel's AMD display (drm/amd/display) driver. This vulnerability involves an incorrect array size calculation and a null pointer dereference during hardware initialization. A local attacker with low privileges could exploit these issues to cause a system crash, leading to a denial of service. More critically, this flaw could potentially be leveraged for privilege escalation, allowing the attacker to gain unauthorized higher access to 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 · 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-476 · NULL Pointer Dereference