Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times

{
  "id": "f7a96253112b1a0728fc88284ca72c398c4c51c89ccebe78acfc89a08f360302",
  "url": "https://osv.dev/vulnerability/CVE-2022-50419",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times device_add shall not be called multiple times as stated in its documentation: 'Do not call this routine or device_register() more than once for any device structure' Syzkaller reports a bug as follows [1]: ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:33! invalid opcode: 0000 [#1] PREEMPT SMP KASAN [...] Call Trace: __list_add include/linux/list.h:69 [inline] list_add_tail include/linux/list.h:102 [inline] kobj_kset_join lib/kobject.c:164 [inline] kobject_add_internal+0x18f/0x8f0 lib/kobject.c:214 kobject_add_varg lib/kobject.c:358 [inline] kobject_add+0x150/0x1c0 lib/kobject.c:410 device_add+0x368/0x1e90 drivers/base/core.c:3452 hci_conn_add_sysfs+0x9b/0x1b0 net/bluetooth/hci_sysfs.c:53 hci_le_cis_estabilished_evt+0x57c/0xae0 net/bluetooth/hci_event.c:6799 hci_le_meta_evt+0x2b8/0x510 net/bluetooth/hci_event.c:7110 hci_event_func net/bluetooth/hci_event.c:7440 [inline] hci_event_packet+0x63d/0xfd0 net/bluetooth/hci_event.c:7495 hci_rx_work+0xae7/0x1230 net/bluetooth/hci_core.c:4007 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306",
    "evidence": "osv:CVE-2022-50419",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
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    "severity": "high",
    "structured": {
      "id": "CVE-2022-50419",
      "aliases": [
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      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
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      "modified": "2026-10-28T02:30:36.901295079Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/1b6c89571f453101251201f0fad1c26f7256e937",
        "https://git.kernel.org/stable/c/3423a50fa018e88aed4c900d59c3c8334d8ad583",
        "https://git.kernel.org/stable/c/448a496f760664d3e2e79466aa1787e6abc922b5",
        "https://git.kernel.org/stable/c/4bcefec3636208b4c97536b26014d5935d5c10a0",
        "https://git.kernel.org/stable/c/6144423712d570247b8ca26e50a277c30dd13702",
        "https://git.kernel.org/stable/c/671fee73e08ff415d36a7c16bdf238927df83884",
        "https://git.kernel.org/stable/c/6e85d2ad958c6f034b1b158d904019869dbb3c81",
        "https://git.kernel.org/stable/c/7b674dce4162bb46d396586e30e4653427023875",
        "https://git.kernel.org/stable/c/ef055094df4c10b73cfe67c8d43f9de1fb608a8b",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50419.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50419",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50419.json"
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        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
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  "source_id": "core-osv",
  "document_id": 504083,
  "published_at": "2025-09-18T16:04:02.152+00:00"
}