GHSA-7GX5-8C2M-VQR5

Vulnerability from github – Published: 2026-07-19 18:31 – Updated: 2026-07-19 18:31
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

usb: usbtmc: check URB actual_length for interrupt-IN notifications

USBTMC devices can use an optional interrupt endpoint for notification messages. These typically contain two-byte headers indicating the payload format, but the driver does not check if these headers are present before accessing the data buffers. In cases where the URB actual_length is not enough to fit these headers, the driver will either cause an out-of-bounds read, or consume stale leftover data from a previous notification.

Fix by checking if actual_data contains enough bytes for the headers, otherwise resubmit URB to the interrupt endpoint.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-63904"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-19T16:17:08Z",
    "severity": null
  },
  "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": "GHSA-7gx5-8c2m-vqr5",
  "modified": "2026-07-19T18:31:45Z",
  "published": "2026-07-19T18:31:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63904"
    },
    {
      "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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