ghsa-wpmx-q548-j5gm
Vulnerability from github
Published
2025-12-16 15:30
Modified
2025-12-16 15:30
Details

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

most: usb: hdm_probe: Fix calling put_device() before device initialization

The early error path in hdm_probe() can jump to err_free_mdev before &mdev->dev has been initialized with device_initialize(). Calling put_device(&mdev->dev) there triggers a device core WARN and ends up invoking kref_put(&kobj->kref, kobject_release) on an uninitialized kobject.

In this path the private struct was only kmalloc'ed and the intended release is effectively kfree(mdev) anyway, so free it directly instead of calling put_device() on an uninitialized device.

This removes the WARNING and fixes the pre-initialization error path.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68249"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-16T15:15:54Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmost: usb: hdm_probe: Fix calling put_device() before device initialization\n\nThe early error path in hdm_probe() can jump to err_free_mdev before\n\u0026mdev-\u003edev has been initialized with device_initialize(). Calling\nput_device(\u0026mdev-\u003edev) there triggers a device core WARN and ends up\ninvoking kref_put(\u0026kobj-\u003ekref, kobject_release) on an uninitialized\nkobject.\n\nIn this path the private struct was only kmalloc\u0027ed and the intended\nrelease is effectively kfree(mdev) anyway, so free it directly instead\nof calling put_device() on an uninitialized device.\n\nThis removes the WARNING and fixes the pre-initialization error path.",
  "id": "GHSA-wpmx-q548-j5gm",
  "modified": "2025-12-16T15:30:47Z",
  "published": "2025-12-16T15:30:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68249"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3509c748e79435d09e730673c8c100b7f0ebc87c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4af0eedbdb4df7936bf43a28e31af232744d2620"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6fb8fbc0aa542af5bf0fed94fa6b0edf18144f95"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7d851f746067b8ee5bac9c262f326ace0a6ea253"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a8cc9e5fcb0e2eef21513a4fec888f5712cb8162"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ad2be44882716dc3589fbc5572cc13f88ead6b24"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c400410fe0580dd6118ae8d60287ac9ce71a65fd"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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