GHSA-WJGW-RWG6-P893

Vulnerability from github – Published: 2026-08-10 15:33 – Updated: 2026-08-19 18:32
VLAI
Details

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

wifi: libertas: fix memory leak in helper_firmware_cb()

helper_firmware_cb() neglects to free the single-stage firmware image after a successful async load, leading to a memory leak in the USB firmware-download path.

Fix this memory leak by calling release_firmware() immediately after lbs_fw_loaded() returns.

The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in the current wireless tree.

An x86_64 allyesconfig build showed no new warnings. As we do not have compatible Libertas USB hardware for exercising this firmware-download path, no runtime testing was able to be performed.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-68410"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-10T13:20:34Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: libertas: fix memory leak in helper_firmware_cb()\n\nhelper_firmware_cb() neglects to free the single-stage firmware image\nafter a successful async load, leading to a memory leak in the USB\nfirmware-download path.\n\nFix this memory leak by calling release_firmware() immediately after\nlbs_fw_loaded() returns.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still present in\nthe current wireless tree.\n\nAn x86_64 allyesconfig build showed no new warnings. As we do not have\ncompatible Libertas USB hardware for exercising this firmware-download\npath, no runtime testing was able to be performed.",
  "id": "GHSA-wjgw-rwg6-p893",
  "modified": "2026-08-19T18:32:19Z",
  "published": "2026-08-10T15:33:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68410"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/63c2391deefb31e1b801b7f32bd502ca4808639b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/644640cde2fb216e6567de5eee780a38dbc95928"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6c1f54a04813676c5a2150d99331c8d21f199374"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6cda91bbb8dc3d22ef0323008a12dcf73a5129da"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7f28722b3e4e0c8d49c859fea4a9b1fa13b5ae06"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce829286f4935f1eb6b5dcb64da02910ce149c76"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d497b7566e74920acfe283dd6b2cbf1682890796"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eaeb1d74a47fc4864f2c754c0b9d654a9b7dc55c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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