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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-31620

ALSA: usx2y: us144mkii: fix NULL deref on missing interface 0CVE-2026-31620

Answer in brief

CVE-2026-31620 records a Unknown severity vulnerability in ALSA: usx2y: us144mkii: fix NULL deref on missing interface 0. 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 24, 2026Updated Nov 6, 2026Source checked Nov 6, 2026First seen by HOL Nov 6, 2026Material review Nov 6, 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>=dee1bcf28a3dd13ddb2e9200407864f73e9c4d63 <09b145c1f1331c40dc955c0024d636f25417cddb || >=dee1bcf28a3dd13ddb2e9200407864f73e9c4d63 <fbaf29ce00e7bce683f3faf4f2b326bd0a9e6602 || >=dee1bcf28a3dd13ddb2e9200407864f73e9c4d63 <d04dd67ab10dc978c6c843c6bd6a2a66a9444f51 || >=dee1bcf28a3dd13ddb2e9200407864f73e9c4d63 <48bd344e1040b9f2eb512be73c13f5db83efc19109b145c1f1331c40dc955c0024d636f25417cddb, fbaf29ce00e7bce683f3faf4f2b326bd0a9e6602, d04dd67ab10dc978c6c843c6bd6a2a66a9444f51, 48bd344e1040b9f2eb512be73c13f5db83efc191
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 09b145c1f1331c40dc955c0024d636f25417cddb if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Apr 24, 2026

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

  2. Source modified

    Nov 6, 2026

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

  3. First seen by HOL

    Nov 6, 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: ALSA: usx2y: us144mkii: fix NULL deref on missing interface 0 A malicious USB device with the TASCAM US-144MKII device id can have a configuration containing bInterfaceNumber=1 but no interface 0. USB configuration descriptors are not required to assign interface numbers sequentially, so usb_ifnum_to_if(dev, 0) returns will NULL, which will then be dereferenced directly. Fix this up by checking the return value properly.

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 6, 2026
References
4 linked sources
Open source record