{"id":"CVE-2026-31620","summary":"ALSA: usx2y: us144mkii: fix NULL deref on missing interface 0","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usx2y: us144mkii: fix NULL deref on missing interface 0\n\nA malicious USB device with the TASCAM US-144MKII device id can have a\nconfiguration containing bInterfaceNumber=1 but no interface 0.  USB\nconfiguration descriptors are not required to assign interface numbers\nsequentially, so usb_ifnum_to_if(dev, 0) returns will NULL, which will\nthen be dereferenced directly.\n\nFix this up by checking the return value properly.","modified":"2026-06-18T03:56:10.267120163Z","published":"2026-04-24T14:42:38.607Z","related":["CGA-q6rr-v9r6-c9xm","openSUSE-SU-2026:10703-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31620.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/09b145c1f1331c40dc955c0024d636f25417cddb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/48bd344e1040b9f2eb512be73c13f5db83efc191"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d04dd67ab10dc978c6c843c6bd6a2a66a9444f51"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fbaf29ce00e7bce683f3faf4f2b326bd0a9e6602"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31620.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31620"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"dee1bcf28a3dd13ddb2e9200407864f73e9c4d63"},{"fixed":"09b145c1f1331c40dc955c0024d636f25417cddb"},{"fixed":"fbaf29ce00e7bce683f3faf4f2b326bd0a9e6602"},{"fixed":"d04dd67ab10dc978c6c843c6bd6a2a66a9444f51"},{"fixed":"48bd344e1040b9f2eb512be73c13f5db83efc191"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31620.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.18.0"},{"fixed":"6.18.24"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.14"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.20.0"},{"fixed":"7.0.1"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31620.json"}}],"schema_version":"1.7.5"}