Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.18, < 6.18.24 |
Related Weaknesses (CWE)
References
- 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
FAQ
What is CVE-2026-31620?
CVE-2026-31620 is a vulnerability with a CVSS score of 4.6 (MEDIUM). 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...
How severe is CVE-2026-31620?
CVE-2026-31620 has been rated MEDIUM with a CVSS base score of 4.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-31620?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.