GHSA-2FF5-8RVR-HGX3

Vulnerability from github – Published: 2024-07-29 15:30 – Updated: 2025-11-04 00:31
VLAI?
Details

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

Bluetooth: hci_core: cancel all works upon hci_unregister_dev()

syzbot is reporting that calling hci_release_dev() from hci_error_reset() due to hci_dev_put() from hci_error_reset() can cause deadlock at destroy_workqueue(), for hci_error_reset() is called from hdev->req_workqueue which destroy_workqueue() needs to flush.

We need to make sure that hdev->{rx_work,cmd_work,tx_work} which are queued into hdev->workqueue and hdev->{power_on,error_reset} which are queued into hdev->req_workqueue are no longer running by the moment

   destroy_workqueue(hdev->workqueue);
   destroy_workqueue(hdev->req_workqueue);

are called from hci_release_dev().

Call cancel_work_sync() on these work items from hci_unregister_dev() as soon as hdev->list is removed from hci_dev_list.

Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2024-41063"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-667"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-07-29T15:15:14Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_core: cancel all works upon hci_unregister_dev()\n\nsyzbot is reporting that calling hci_release_dev() from hci_error_reset()\ndue to hci_dev_put() from hci_error_reset() can cause deadlock at\ndestroy_workqueue(), for hci_error_reset() is called from\nhdev-\u003ereq_workqueue which destroy_workqueue() needs to flush.\n\nWe need to make sure that hdev-\u003e{rx_work,cmd_work,tx_work} which are\nqueued into hdev-\u003eworkqueue and hdev-\u003e{power_on,error_reset} which are\nqueued into hdev-\u003ereq_workqueue are no longer running by the moment\n\n       destroy_workqueue(hdev-\u003eworkqueue);\n       destroy_workqueue(hdev-\u003ereq_workqueue);\n\nare called from hci_release_dev().\n\nCall cancel_work_sync() on these work items from hci_unregister_dev()\nas soon as hdev-\u003elist is removed from hci_dev_list.",
  "id": "GHSA-2ff5-8rvr-hgx3",
  "modified": "2025-11-04T00:31:00Z",
  "published": "2024-07-29T15:30:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-41063"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0d151a103775dd9645c78c97f77d6e2a5298d913"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3f939bd73fed12dddc2a32a76116c19ca47c7678"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/48542881997e17b49dc16b93fe910e0cfcf7a9f9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/96600c2e5ee8213dbab5df1617293d8e847bb4fa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9cfc84b1d464cc024286f42a090718f9067b80ed"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d2ce562a5aff1dcd0c50d9808ea825ef90da909f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d6cbce18370641a21dd889e8613d8153df15eb39"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ddeda6ca5f218b668b560d90fc31ae469adbfd92"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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