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  4. CVE 2026 31436 dmaengine idxd fix possible wrong descriptor
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Back to active CVEs
Critical · CVSS 9.8CVE-2026-31436

dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()CVE-2026-31436

Answer in brief

CVE-2026-31436 records a Critical severity (CVSS 9.8) vulnerability in dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc(). 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 22, 2026Updated Oct 16, 2026Source checked Oct 16, 2026First seen by HOL Oct 16, 2026Material review Oct 16, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.8
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 9.8. 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>=aa8d18becc0c14aa3eb46d6d1b81450446e11b87 <e21da2ad8844585040fe4b82be1ad2fe99d40074 || >=aa8d18becc0c14aa3eb46d6d1b81450446e11b87 <82656e8daf8de00935ae91b91bed43f4d6e0d644 || >=aa8d18becc0c14aa3eb46d6d1b81450446e11b87 <0e4f43779d550e559be13a5cdb763bad92c4cc99 || >=aa8d18becc0c14aa3eb46d6d1b81450446e11b87 <e1c9866173c5f8521f2d0768547a01508cb9ff27e21da2ad8844585040fe4b82be1ad2fe99d40074, 82656e8daf8de00935ae91b91bed43f4d6e0d644, 0e4f43779d550e559be13a5cdb763bad92c4cc99, e1c9866173c5f8521f2d0768547a01508cb9ff27
Linux/Linuxgeneric6.8Not 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 e21da2ad8844585040fe4b82be1ad2fe99d40074 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Apr 22, 2026

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

  2. Source modified

    Oct 16, 2026

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

  3. First seen by HOL

    Oct 16, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • 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: dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc() At the end of this function, d is the traversal cursor of flist, but the code completes found instead. This can lead to issues such as NULL pointer dereferences, double completion, or descriptor leaks. Fix this by completing d instead of found in the final list_for_each_entry_safe() loop.

Quoted source text, attributed separately from HOL analysis.

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Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 16, 2026
References
4 linked sources
Open source record