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CVE-2026-63844

drm/amdgpu/jpeg: set no_user_fence for JPEG v4.0.3 ring

HIGH
7.8
CVSS Score
Published: July 19, 2026 at 02:04 PM UTC
Updated: October 22, 2026 at 06:57 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/jpeg: set no_user_fence for JPEG v4.0.3 ring JPEG rings do not support 64-bit user fence writes, reject CS submissions with user fences. (cherry picked from commit 2f6afc97d259d530f4f86c7743efbc573a8da927)

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
6.13 ≤ v < 6.18.336.19 ≤ v < 7.0.106.5 ≤ v < 6.6.1416.7 ≤ v < 6.12.916.57.1e684e654eba9481a9f462a7bbf5c385b7d1c076e
Vendor states this is fixed in 249fa7549736de1c8e327d7ca6b32fa148a40bd6 (fixed)
Vendor states this is fixed in 83e37c0987ca92f9e87789b46dd311dcf5a4a6c8 (fixed)
Vendor states this is fixed in 8549b3933038e68dc61cb934b9a54223dd244a78 (fixed)
Vendor states this is fixed in b884ff67d62ef514eee9d5f605c03101c8b6bc98 (fixed)
Vendor states this is fixed in d6bd2a5fd611ec9c8a2411f084cff2435c709608 (fixed)
Vendor states this is fixed in 6.12.91 (unaffected)
Vendor states this is fixed in 6.18.33 (unaffected)
Vendor states this is fixed in 6.5 (unaffected)
Vendor states this is fixed in 6.6.141 (unaffected)
Vendor states this is fixed in 7.0.10 (unaffected)
Vendor states this is fixed in 7.1 (unaffected)

References (5)

Patch
Source: cverecord
https://git.kernel.org/stable/c/b884ff67d62ef514eee9d5f605c03101c8b6bc98
Patch
Source: cverecord
https://git.kernel.org/stable/c/d6bd2a5fd611ec9c8a2411f084cff2435c709608
Patch
Source: cverecord
https://git.kernel.org/stable/c/8549b3933038e68dc61cb934b9a54223dd244a78
Patch
Source: cverecord
https://git.kernel.org/stable/c/249fa7549736de1c8e327d7ca6b32fa148a40bd6
Patch
Source: cverecord
https://git.kernel.org/stable/c/83e37c0987ca92f9e87789b46dd311dcf5a4a6c8

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusANALYZED
CWE
CWE-20CWE-754

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