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Review reviewHigh

CVE-2026-63843

Linux

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)

CVSS
7.8
EPSS
-
- percentile
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

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 product and versions

Product
Linux
Affected versions
>= 8f98a715da8e906cff5c635f9eb5399b84751557 < 424510b60d4698a75a6ff71acdd88b528f0f39af, >= 8f98a715da8e906cff5c635f9eb5399b84751557 < f26e3f7186cd6ecc93e6af102744d64c798dea7e, >= 8f98a715da8e906cff5c635f9eb5399b84751557 < f9bc5633b761cff200c428f61ed0df6212b1c721, >= 8f98a715da8e906cff5c635f9eb5399b84751557 < b65b7f3f3c18f797f81a2af7c97e2079900ad6db, >= 6.7
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. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 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