{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "dbf3e7f654c0f06a932b8fcafac78de9d0b81d68"
            },
            {
              "fixed": "e794bd67b3faf98af46f958897f6b91412c7d2a9"
            },
            {
              "fixed": "e3eec3005de44e7f37d8d7724be636446516ab42"
            },
            {
              "fixed": "ae87f505917e703ae3b487d9663d78826ff43608"
            },
            {
              "fixed": "5de7df75ef3a2756b25fe3d582a4a2970444fe5a"
            },
            {
              "fixed": "69020fa089f1bf0e1a10a15265f31b143a846409"
            },
            {
              "fixed": "75f6d3da2cc646983f41807ef98851569c12bca9"
            },
            {
              "fixed": "f141b01eaa58ac7e323931d670318aa247bff087"
            },
            {
              "fixed": "52f2ad3f7e5eb3b5908e1d685d4342519dc9cfcd"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.6.0"
            },
            {
              "fixed": "5.10.259"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.210"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.176"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.143"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.93"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.35"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63904.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: usbtmc: check URB actual_length for interrupt-IN notifications\n\nUSBTMC devices can use an optional interrupt endpoint for notification\nmessages. These typically contain two-byte headers indicating the\npayload format, but the driver does not check if these headers are\npresent before accessing the data buffers. In cases where the URB\nactual_length is not enough to fit these headers, the driver will either\ncause an out-of-bounds read, or consume stale leftover data from a\nprevious notification.\n\nFix by checking if actual_data contains enough bytes for the headers,\notherwise resubmit URB to the interrupt endpoint.",
  "id": "CVE-2026-63904",
  "modified": "2026-07-21T03:41:49.734843489Z",
  "published": "2026-07-19T14:55:11.547Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/52f2ad3f7e5eb3b5908e1d685d4342519dc9cfcd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5de7df75ef3a2756b25fe3d582a4a2970444fe5a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/69020fa089f1bf0e1a10a15265f31b143a846409"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/75f6d3da2cc646983f41807ef98851569c12bca9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ae87f505917e703ae3b487d9663d78826ff43608"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e3eec3005de44e7f37d8d7724be636446516ab42"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e794bd67b3faf98af46f958897f6b91412c7d2a9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f141b01eaa58ac7e323931d670318aa247bff087"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63904.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63904"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "usb: usbtmc: check URB actual_length for interrupt-IN notifications"
}