ghsa-fvf2-2vh9-p4j4
Vulnerability from github
Published
2025-09-17 15:30
Modified
2025-09-17 15:30
Details

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

usb: gadget: u_serial: Add null pointer check in gserial_suspend

Consider a case where gserial_disconnect has already cleared gser->ioport. And if gserial_suspend gets called afterwards, it will lead to accessing of gser->ioport and thus causing null pointer dereference.

Avoid this by adding a null pointer check. Added a static spinlock to prevent gser->ioport from becoming null after the newly added null pointer check.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-53356"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-17T15:15:39Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: u_serial: Add null pointer check in gserial_suspend\n\nConsider a case where gserial_disconnect has already cleared\ngser-\u003eioport. And if gserial_suspend gets called afterwards,\nit will lead to accessing of gser-\u003eioport and thus causing\nnull pointer dereference.\n\nAvoid this by adding a null pointer check. Added a static\nspinlock to prevent gser-\u003eioport from becoming null after\nthe newly added null pointer check.",
  "id": "GHSA-fvf2-2vh9-p4j4",
  "modified": "2025-09-17T15:30:39Z",
  "published": "2025-09-17T15:30:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53356"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2788a3553f7497075653210b42e2aeb6ba95e28e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2f6ecb89fe8feb2b60a53325b0eeb9866d88909a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/374447e3367767156405bedd230c5d391f4b7962"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a8ea7ed644cbf6314b5b0136b5398754b549fb8f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e60a827ac074ce6bd58305fe5a86afab5fce6a04"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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