Review reviewHigh

CVE-2026-63846

Linux

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/jpeg: set no_user_fence for JPEG v3.0 ring JPEG rings do not support 64-bit user fence writes, reject CS submissions with user fences. (cherry picked from commit 4d7d774f100efb5089c86a1fb8c5bf47c63fc9ef)

CVSS: 7.8
EPSS: -
CISA KEV: Not listed
Published: 2026.07.20

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability-

Technical severityCVSS 7.8

Vulnerability overview

Affected product and versions

Product: Linux
Affected versions: >= dfd57dbf44ddc70c90c76f83b2deb46e5dd40ce3 < ee035a9d3eed3a9f5a3e83c31a10b321c9598861, >= dfd57dbf44ddc70c90c76f83b2deb46e5dd40ce3 < 303da8279f195cc741adc52c1b44d6b64de63bb0, >= dfd57dbf44ddc70c90c76f83b2deb46e5dd40ce3 < 5ada37d7f736f9feeaa06a25e470a4c74e67a61a, >= dfd57dbf44ddc70c90c76f83b2deb46e5dd40ce3 < 48ce00787e3fddd2b45692fc991b8ab128343da5, >= dfd57dbf44ddc70c90c76f83b2deb46e5dd40ce3 < a2baf12eec41f246689e6a3f8619af1200031576, >= 5.9
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Linux and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE: Not available