---
id: CVE-2026-63843
title: 'drm/amdgpu/jpeg: set no_user_fence for JPEG v4.0.5 ring'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amdgpu/jpeg: set no_user_fence for JPEG v4.0.5 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 >= 8f98a715da8e906cff5c635f9eb5399b84751557 <
    424510b60d4698a75a6ff71acdd88b528f0f39af
  - >-
    Linux >= 8f98a715da8e906cff5c635f9eb5399b84751557 <
    f26e3f7186cd6ecc93e6af102744d64c798dea7e
  - >-
    Linux >= 8f98a715da8e906cff5c635f9eb5399b84751557 <
    f9bc5633b761cff200c428f61ed0df6212b1c721
  - >-
    Linux >= 8f98a715da8e906cff5c635f9eb5399b84751557 <
    b65b7f3f3c18f797f81a2af7c97e2079900ad6db
  - Linux 6.7
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T15:31:47.757035Z'
published: '2026-07-19'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:42:06.426Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-63843'
references:
  - url: 'https://git.kernel.org/stable/c/424510b60d4698a75a6ff71acdd88b528f0f39af'
  - url: 'https://git.kernel.org/stable/c/f26e3f7186cd6ecc93e6af102744d64c798dea7e'
  - url: 'https://git.kernel.org/stable/c/f9bc5633b761cff200c428f61ed0df6212b1c721'
  - url: 'https://git.kernel.org/stable/c/b65b7f3f3c18f797f81a2af7c97e2079900ad6db'
tags:
  - cve.org
epss: 0.00175
epssPercentile: 0.0655
ingestedAt: '2026-10-16T17:24:46.758Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu/jpeg: set no_user_fence for JPEG v4.0.5 ring

JPEG rings do not support 64-bit user fence writes, reject CS
submissions with user fences.

(cherry picked from commit f05d0a4f21fc720116d6e238f23308b199891058)

## Affected

- `Linux >= 8f98a715da8e906cff5c635f9eb5399b84751557 < 424510b60d4698a75a6ff71acdd88b528f0f39af`
- `Linux >= 8f98a715da8e906cff5c635f9eb5399b84751557 < f26e3f7186cd6ecc93e6af102744d64c798dea7e`
- `Linux >= 8f98a715da8e906cff5c635f9eb5399b84751557 < f9bc5633b761cff200c428f61ed0df6212b1c721`
- `Linux >= 8f98a715da8e906cff5c635f9eb5399b84751557 < b65b7f3f3c18f797f81a2af7c97e2079900ad6db`
- `Linux 6.7`

## Remediation

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