---
id: CVE-2026-63844
title: 'drm/amdgpu/jpeg: set no_user_fence for JPEG v4.0.3 ring'
summary: |-
  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 fro…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= e684e654eba9481a9f462a7bbf5c385b7d1c076e <
    b884ff67d62ef514eee9d5f605c03101c8b6bc98
  - >-
    Linux >= e684e654eba9481a9f462a7bbf5c385b7d1c076e <
    d6bd2a5fd611ec9c8a2411f084cff2435c709608
  - >-
    Linux >= e684e654eba9481a9f462a7bbf5c385b7d1c076e <
    8549b3933038e68dc61cb934b9a54223dd244a78
  - >-
    Linux >= e684e654eba9481a9f462a7bbf5c385b7d1c076e <
    249fa7549736de1c8e327d7ca6b32fa148a40bd6
  - >-
    Linux >= e684e654eba9481a9f462a7bbf5c385b7d1c076e <
    83e37c0987ca92f9e87789b46dd311dcf5a4a6c8
  - Linux 6.5
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T15:31:50.488379Z'
published: '2026-07-19'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:42:06.578Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-63844'
references:
  - url: 'https://git.kernel.org/stable/c/b884ff67d62ef514eee9d5f605c03101c8b6bc98'
  - url: 'https://git.kernel.org/stable/c/d6bd2a5fd611ec9c8a2411f084cff2435c709608'
  - url: 'https://git.kernel.org/stable/c/8549b3933038e68dc61cb934b9a54223dd244a78'
  - url: 'https://git.kernel.org/stable/c/249fa7549736de1c8e327d7ca6b32fa148a40bd6'
  - url: 'https://git.kernel.org/stable/c/83e37c0987ca92f9e87789b46dd311dcf5a4a6c8'
tags:
  - cve.org
epss: 0.00175
epssPercentile: 0.06539
ingestedAt: '2026-10-16T17:24:46.757Z'
---

## Overview

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

- `Linux >= e684e654eba9481a9f462a7bbf5c385b7d1c076e < b884ff67d62ef514eee9d5f605c03101c8b6bc98`
- `Linux >= e684e654eba9481a9f462a7bbf5c385b7d1c076e < d6bd2a5fd611ec9c8a2411f084cff2435c709608`
- `Linux >= e684e654eba9481a9f462a7bbf5c385b7d1c076e < 8549b3933038e68dc61cb934b9a54223dd244a78`
- `Linux >= e684e654eba9481a9f462a7bbf5c385b7d1c076e < 249fa7549736de1c8e327d7ca6b32fa148a40bd6`
- `Linux >= e684e654eba9481a9f462a7bbf5c385b7d1c076e < 83e37c0987ca92f9e87789b46dd311dcf5a4a6c8`
- `Linux 6.5`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.