ghsa-m8vr-v3r8-7vqf
Vulnerability from github
Published
2025-12-08 03:31
Modified
2025-12-08 03:31
Details

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

Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once

hci_cmd_sync_dequeue_once() does lookup and then cancel the entry under two separate lock sections. Meanwhile, hci_cmd_sync_work() can also delete the same entry, leading to double list_del() and "UAF".

Fix this by holding cmd_sync_work_lock across both lookup and cancel, so that the entry cannot be removed concurrently.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-40318"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-08T01:16:04Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once\n\nhci_cmd_sync_dequeue_once() does lookup and then cancel\nthe entry under two separate lock sections. Meanwhile,\nhci_cmd_sync_work() can also delete the same entry,\nleading to double list_del() and \"UAF\".\n\nFix this by holding cmd_sync_work_lock across both\nlookup and cancel, so that the entry cannot be removed\nconcurrently.",
  "id": "GHSA-m8vr-v3r8-7vqf",
  "modified": "2025-12-08T03:31:01Z",
  "published": "2025-12-08T03:31:01Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40318"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/09b0cd1297b4dbfe736aeaa0ceeab2265f47f772"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0a94f7e017438935c09ef833a1aa908ad9875213"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/932c0a4f77ac13e526fdd5b42914d29c9821d389"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9cd536970192b72257afcdfba0bfc09993e6f19c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ae76cf6c2c842944c6514c57df54d728f1916553"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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