{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "baac6276c0a9f36f1fe1f00590ef00d2ba5ba626"
            },
            {
              "fixed": "312c4450fe23014665c163f480edd5ad2e27bbb8"
            },
            {
              "fixed": "9dd13a8641de79bc1bc93da55cdd35259a002683"
            },
            {
              "fixed": "476c9262b430c38c6a701a3b8176a3f48689085b"
            },
            {
              "fixed": "6fba3c3d48c927e55611a0f5ea34da88138ed0ff"
            },
            {
              "fixed": "834cf890d2c3d29cbfa1ee2376c40469c28ec297"
            },
            {
              "fixed": "1019028eb124564cf7bca58a16f1df8a1ca30726"
            },
            {
              "fixed": "21c254202f9d78abe0fcd642a92966deb92bd226"
            },
            {
              "fixed": "129fa608b6ad08b8ab7178eeb2ec272c993aaccc"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.8.0"
            },
            {
              "fixed": "5.10.253"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.203"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.168"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.131"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.80"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.21"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31497.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btusb: clamp SCO altsetting table indices\n\nbtusb_work() maps the number of active SCO links to USB alternate\nsettings through a three-entry lookup table when CVSD traffic uses\ntransparent voice settings. The lookup currently indexes alts[] with\ndata-\u003esco_num - 1 without first constraining sco_num to the number of\navailable table entries.\n\nWhile the table only defines alternate settings for up to three SCO\nlinks, data-\u003esco_num comes from hci_conn_num() and is used directly.\nCap the lookup to the last table entry before indexing it so the\ndriver keeps selecting the highest supported alternate setting without\nreading past alts[].",
  "id": "CVE-2026-31497",
  "modified": "2026-07-08T05:39:29.630339777Z",
  "published": "2026-04-22T13:54:19.051Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1019028eb124564cf7bca58a16f1df8a1ca30726"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/129fa608b6ad08b8ab7178eeb2ec272c993aaccc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/21c254202f9d78abe0fcd642a92966deb92bd226"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/312c4450fe23014665c163f480edd5ad2e27bbb8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/476c9262b430c38c6a701a3b8176a3f48689085b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6fba3c3d48c927e55611a0f5ea34da88138ed0ff"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/834cf890d2c3d29cbfa1ee2376c40469c28ec297"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9dd13a8641de79bc1bc93da55cdd35259a002683"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31497.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31497"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "Bluetooth: btusb: clamp SCO altsetting table indices"
}