CVE-2026-31620 (GCVE-0-2026-31620)

Vulnerability from cvelistv5 – Published: 2026-04-24 14:42 – Updated: 2026-04-27 11:01
VLAI?
Title
ALSA: usx2y: us144mkii: fix NULL deref on missing interface 0
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: dee1bcf28a3dd13ddb2e9200407864f73e9c4d63 , < 09b145c1f1331c40dc955c0024d636f25417cddb (git)
Affected: dee1bcf28a3dd13ddb2e9200407864f73e9c4d63 , < fbaf29ce00e7bce683f3faf4f2b326bd0a9e6602 (git)
Affected: dee1bcf28a3dd13ddb2e9200407864f73e9c4d63 , < d04dd67ab10dc978c6c843c6bd6a2a66a9444f51 (git)
Affected: dee1bcf28a3dd13ddb2e9200407864f73e9c4d63 , < 48bd344e1040b9f2eb512be73c13f5db83efc191 (git)
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    Linux Linux Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.18.24 , ≤ 6.18.* (semver)
Unaffected: 6.19.14 , ≤ 6.19.* (semver)
Unaffected: 7.0.1 , ≤ 7.0.* (semver)
Unaffected: 7.1-rc1 , ≤ * (original_commit_for_fix)
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}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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