{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-46138",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2026-46138"
  ],
  "published": "2026-05-28T09:36:53Z",
  "summary": "Bluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt\n\nhci_le_create_big_complete_evt() iterates over BT_BOUND connections for\na BIG handle using a while loop, accessing ev->bis_handle[i++] on each\niteration.  However, there is no check that i stays within ev->num_bis\nbefore the array access.\n\nWhen a controller sends a LE_Create_BIG_Complete event with fewer\nbis_handle entries than there are BT_BOUND connections for that BIG,\nor with num_bis=0, the loop reads beyond the valid bis_handle[] flex\narray into adjacent heap memory.  Since the out-of-bounds values\ntypically exceed HCI_CONN_HANDLE_MAX (0x0EFF), hci_conn_set_handle()\nrejects them and the connection remains in BT_BOUND state.  The same\nconnection is then found again by hci_conn_hash_lookup_big_state(),\ncreating an infinite loop with hci_dev_lock held.\n\nFix this by terminating the BIG if in case not all BIS could be setup\nproperly.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
    }
  ],
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    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46138"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6cb7f67bc28da787499291a562d49a084d9c90cd"
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      "url": "https://git.kernel.org/stable/c/22559ad7654f61727fc270ee4893da9f4b70cf17"
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    "upstream_modified": "2026-08-05T13:16:28Z",
    "severity": {
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}