{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-31499",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-31499"
  ],
  "published": "2026-04-22T13:57:42Z",
  "summary": "Bluetooth: L2CAP: Fix deadlock in l2cap_conn_del()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix deadlock in l2cap_conn_del()\n\nl2cap_conn_del() calls cancel_delayed_work_sync() for both info_timer\nand id_addr_timer while holding conn->lock. However, the work functions\nl2cap_info_timeout() and l2cap_conn_update_id_addr() both acquire\nconn->lock, creating a potential AB-BA deadlock if the work is already\nexecuting when l2cap_conn_del() takes the lock.\n\nMove the work cancellations before acquiring conn->lock and use\ndisable_delayed_work_sync() to additionally prevent the works from\nbeing rearmed after cancellation, consistent with the pattern used in\nhci_conn_del().",
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  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31499"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f7f35a4f7fd574f5889bb2e4b397e14cbb83f6da"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3f26ecbd9cde621dd94be7ef252c7210b965a5c7"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d008460de352e534f6721de829b093368564ec66"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/00fdebbbc557a2fc21321ff2eaa22fd70c078608"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-24T06:48:58Z"
  }
}