CVE-2026-31620
ALSA: usx2y: us144mkii: fix NULL deref on missing interface 0
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Apr 24, 2026 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
dee1bcf28a3dd13ddb2e9200407864f73e9c4d63 < 09b145c1f1331c40dc955c0024d636f25417cddb dee1bcf28a3dd13ddb2e9200407864f73e9c4d63 < fbaf29ce00e7bce683f3faf4f2b326bd0a9e6602 dee1bcf28a3dd13ddb2e9200407864f73e9c4d63 < d04dd67ab10dc978c6c843c6bd6a2a66a9444f51 dee1bcf28a3dd13ddb2e9200407864f73e9c4d63 < 48bd344e1040b9f2eb512be73c13f5db83efc191
Linux / Linux
6.18
References
git.kernel.org: https://git.kernel.org/stable/c/09b145c1f1331c40dc955c0024d636f25417cddb git.kernel.org: https://git.kernel.org/stable/c/fbaf29ce00e7bce683f3faf4f2b326bd0a9e6602 git.kernel.org: https://git.kernel.org/stable/c/d04dd67ab10dc978c6c843c6bd6a2a66a9444f51 git.kernel.org: https://git.kernel.org/stable/c/48bd344e1040b9f2eb512be73c13f5db83efc191