medium4.6
CVE-2026-31620
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 t…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 6.18 before 6.18.24 from 6.19 before 6.19.14 from 7.0 before 7.0.1 |
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/09b145c1f1331c40dc955c0024d636f25417cddb
- https://git.kernel.org/stable/c/48bd344e1040b9f2eb512be73c13f5db83efc191
- https://git.kernel.org/stable/c/d04dd67ab10dc978c6c843c6bd6a2a66a9444f51
- https://git.kernel.org/stable/c/fbaf29ce00e7bce683f3faf4f2b326bd0a9e6602