CVE-2026-63843
kernel: drm/amdgpu/jpeg: set no_user_fence for JPEG v4.0.5 ring
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 19, 2026
Updated · October 29, 2026
Description
A flaw was found in the Linux kernel's AMD GPU (Graphics Processing Unit) JPEG (Joint Photographic Experts Group) component. This vulnerability arises because the JPEG v4.0.5 ring does not correctly support 64-bit user fence writes. A local attacker could exploit this by submitting commands with 64-bit user fences, leading to the rejection of these submissions and potentially causing a denial of service for affected operations.
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-229 · Improper Handling of Values