{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "dee1bcf28a3dd13ddb2e9200407864f73e9c4d63"
            },
            {
              "fixed": "09b145c1f1331c40dc955c0024d636f25417cddb"
            },
            {
              "fixed": "fbaf29ce00e7bce683f3faf4f2b326bd0a9e6602"
            },
            {
              "fixed": "d04dd67ab10dc978c6c843c6bd6a2a66a9444f51"
            },
            {
              "fixed": "48bd344e1040b9f2eb512be73c13f5db83efc191"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "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"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31620.json"
  },
  "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.",
  "id": "CVE-2026-31620",
  "modified": "2026-07-15T01:49:00.183159311Z",
  "published": "2026-04-24T14:42:38.607Z",
  "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"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "ALSA: usx2y: us144mkii: fix NULL deref on missing interface 0"
}