{"cve":"CVE-2026-31620","nvd":{"published":"2026-04-24T15:16:41.280","modified":"2026-06-17T10:34:06.350","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":4.6},"cwes":["CWE-476"],"references":["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"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:33:09.003606135+00:00"},"epss":{"cve":"CVE-2026-31620","score":0.00196,"percentile":0.09393,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}