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  4. CVE 2026 23421 drmxeconfigfs free ctxrestoremidbb in release
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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-23421

drm/xe/configfs: Free ctx_restore_mid_bb in releaseCVE-2026-23421

Answer in brief

CVE-2026-23421 records a Unknown severity vulnerability in drm/xe/configfs: Free ctx_restore_mid_bb in release. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Apr 3, 2026Updated Nov 5, 2026Source checked Nov 5, 2026First seen by HOL Nov 5, 2026Material review Nov 5, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=b30d5de3d40c3fa642079bac0d91f17091c5f877 <7f971dfd48983074adc7bbcea3ee95ce7aad47cb || >=b30d5de3d40c3fa642079bac0d91f17091c5f877 <3557359ea3df32430ea7c30f7a708ca9a91d7e0e || >=b30d5de3d40c3fa642079bac0d91f17091c5f877 <e377182f0266f46f02d01838e6bde67b9dac0d667f971dfd48983074adc7bbcea3ee95ce7aad47cb, 3557359ea3df32430ea7c30f7a708ca9a91d7e0e, e377182f0266f46f02d01838e6bde67b9dac0d66
Linux/Linuxgeneric6.18Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to 7f971dfd48983074adc7bbcea3ee95ce7aad47cb if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Apr 3, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 5, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: drm/xe/configfs: Free ctx_restore_mid_bb in release ctx_restore_mid_bb memory is allocated in wa_bb_store(), but xe_config_device_release() only frees ctx_restore_post_bb. Free ctx_restore_mid_bb[0].cs as well to avoid leaking the allocation when the configfs device is removed. (cherry picked from commit a235e7d0098337c3f2d1e8f3610c719a589e115f)

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Nov 5, 2026
References
3 linked sources
Open source record