Riskcovery

CVE-2026-31620

ALSA: usx2y: us144mkii: fix NULL deref on missing interface 0

State
Published
Severity
Not scored
Published
Apr 24, 2026
Updated
Jun 14, 2026
Reserved
Mar 9, 2026

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • dee1bcf28a3dd13ddb2e9200407864f73e9c4d63 to before 09b145c1f1331c40dc955c0024d636f25417cddbAffected
  • dee1bcf28a3dd13ddb2e9200407864f73e9c4d63 to before fbaf29ce00e7bce683f3faf4f2b326bd0a9e6602Affected
  • dee1bcf28a3dd13ddb2e9200407864f73e9c4d63 to before d04dd67ab10dc978c6c843c6bd6a2a66a9444f51Affected
  • dee1bcf28a3dd13ddb2e9200407864f73e9c4d63 to before 48bd344e1040b9f2eb512be73c13f5db83efc191Affected
LinuxLinux
  • 6.18Affected
  • before 6.18Not affected
  • 6.18.24 through 6.18.*Not affected
  • 6.19.14 through 6.19.*Not affected
  • 7.0.1 through 7.0.*Not affected
  • 7.1 and laterNot affected

References

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