CVE-2026-31620
MEDIUM severity · CVSS 4.6 · CWE-476
4.6CVSS MEDIUM
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.
Impact & exploitability
Attack vectorPhysical
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/09b145c1f1331c40dc955c0024d636f25417cddb ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/09b145c1f1331c40dc955c0024d636f25417cddbPatch
- https://git.kernel.org/stable/c/48bd344e1040b9f2eb512be73c13f5db83efc191Patch
- https://git.kernel.org/stable/c/d04dd67ab10dc978c6c843c6bd6a2a66a9444f51Patch
- https://git.kernel.org/stable/c/fbaf29ce00e7bce683f3faf4f2b326bd0a9e6602Patch