ghsa-475m-mm7r-j479
Vulnerability from github
Published
2025-12-24 18:30
Modified
2025-12-24 18:30
Details

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

usb: potential integer overflow in usbg_make_tpg()

The variable tpgt in usbg_make_tpg() is defined as unsigned long and is assigned to tpgt->tport_tpgt, which is defined as u16. This may cause an integer overflow when tpgt is greater than USHRT_MAX (65535). I haven't tried to trigger it myself, but it is possible to trigger it by calling usbg_make_tpg() with a large value for tpgt.

I modified the type of tpgt to match tpgt->tport_tpgt and adjusted the relevant code accordingly.

This patch is similar to commit 59c816c1f24d ("vhost/scsi: potential memory corruption").

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68750"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-24T16:15:48Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: potential integer overflow in usbg_make_tpg()\n\nThe variable tpgt in usbg_make_tpg() is defined as unsigned long and is\nassigned to tpgt-\u003etport_tpgt, which is defined as u16. This may cause an\ninteger overflow when tpgt is greater than USHRT_MAX (65535). I\nhaven\u0027t tried to trigger it myself, but it is possible to trigger it\nby calling usbg_make_tpg() with a large value for tpgt.\n\nI modified the type of tpgt to match tpgt-\u003etport_tpgt and adjusted the\nrelevant code accordingly.\n\nThis patch is similar to commit 59c816c1f24d (\"vhost/scsi: potential\nmemory corruption\").",
  "id": "GHSA-475m-mm7r-j479",
  "modified": "2025-12-24T18:30:22Z",
  "published": "2025-12-24T18:30:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68750"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0861b9cb2ff519b7c5a3b1dd52a343e18c4efb24"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/153874010354d050f62f8ae25cbb960c17633dc5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/358d5ba08f1609c34a054aed88c431844d09705a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/603a83e5fee38a950bfcfb2f36449311fa00a474"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/620a5e1e84a3a7004270703a118d33eeb1c0f368"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6722e080b5b39ab7471386c73d0c1b39572f943c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6f77e344515b5258edb3988188311464209b1c7c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a33f507f36d5881f602dab581ab0f8d22b49762c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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