{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-74534",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-74534"
  ],
  "published": "2026-08-15T12:28:42Z",
  "summary": "Bluetooth: ISO: fix refcounting of iso_conn",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: fix refcounting of iso_conn\n\niso_conn_del() and iso_chan_del() have a race that results to double-put\nof iso_conn:\n\n    [Task hdev->workqueue]         [Task 2]\n    iso_conn_del                   iso_chan_del\n      iso_conn_hold_unless_zero      iso_conn_lock\n      iso_conn_lock                  conn->sk = NULL\n                                     iso_conn_unlock\n      sk = iso_sock_hold(conn)  <---------\u00b4\n      if (!sk) iso_conn_put          iso_conn_put\n      iso_conn_put /* UAF */\n\nThe extra put for !sk in iso_conn_del() is currently required since\nfailing iso_chan_add() may leave iso_conn not associated with any sk.\n\nFix by having iso_pi(sk)->conn own refcount when non-NULL, so\niso_conn_del does not need to put it.  Adjust the iso_conn_add()\nrefcounting so that conn is put if it does not get associated with an\nsk.",
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