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GHSA-24FG-X37M-25C7

Vulnerability from github – Published: 2026-09-04 18:31 – Updated: 2026-09-04 18:31
VLAI
Details

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

USB: c67x00: fix use-after-free in c67x00_add_iso_urb()

When TD creation fails for the last packet of an isochronous URB, c67x00_add_iso_urb() gives the URB back before updating the endpoint scheduling state.

c67x00_giveback_urb() frees the URB private data, and the completion callback may release the final URB reference. The following accesses to urbp->ep_data, urb->interval, and urbp->cnt can therefore use freed memory.

Update next_frame and cnt before giving back the failed final packet, making the giveback the last operation that uses the URB and its private data.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-80826"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-04T16:18:10Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: c67x00: fix use-after-free in c67x00_add_iso_urb()\n\nWhen TD creation fails for the last packet of an isochronous URB,\nc67x00_add_iso_urb() gives the URB back before updating the endpoint\nscheduling state.\n\nc67x00_giveback_urb() frees the URB private data, and the completion\ncallback may release the final URB reference. The following accesses to\nurbp-\u003eep_data, urb-\u003einterval, and urbp-\u003ecnt can therefore use freed\nmemory.\n\nUpdate next_frame and cnt before giving back the failed final packet,\nmaking the giveback the last operation that uses the URB and its private\ndata.",
  "id": "GHSA-24fg-x37m-25c7",
  "modified": "2026-09-04T18:31:27Z",
  "published": "2026-09-04T18:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80826"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/62cd519ab74cac499036cd88c11692f8f0d53e14"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7983daa159981fac125db2457437723f38ea1472"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ade18b4ce78a16558f4f435aece80082f6f7b64c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b1e24de475bf2d66fffc9103f3444b783527d55a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b4cb8081cf80f82e48fbe9c021a8f6d0fa2ed421"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bb572801290e25ec1c4753d14af35777303f5d6b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e4039e9bebb528dd9cd7ac72aeaec529c26c355a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f24dcc61bd0ecf7639fac5bf700450b398d793a7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ff172092cba7ec990ecc7b610ce703e19570b8f0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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