Bluetooth: ISO: Fix multiple init when debugfs is disabled

{
  "id": "d4d921e1287b395222f219cb44174bfd0e68cfd48e3f02e3abc5fc997700780a",
  "url": "https://osv.dev/vulnerability/CVE-2024-50077",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Bluetooth: ISO: Fix multiple init when debugfs is disabled",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: Fix multiple init when debugfs is disabled If bt_debugfs is not created successfully, which happens if either CONFIG_DEBUG_FS or CONFIG_DEBUG_FS_ALLOW_ALL is unset, then iso_init() returns early and does not set iso_inited to true. This means that a subsequent call to iso_init() will result in duplicate calls to proto_register(), bt_sock_register(), etc. With CONFIG_LIST_HARDENED and CONFIG_BUG_ON_DATA_CORRUPTION enabled, the duplicate call to proto_register() triggers this BUG(): list_add double add: new=ffffffffc0b280d0, prev=ffffffffbab56250, next=ffffffffc0b280d0. ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:35! Oops: invalid opcode: 0000 [#1] PREEMPT SMP PTI CPU: 2 PID: 887 Comm: bluetoothd Not tainted 6.10.11-1-ao-desktop #1 RIP: 0010:__list_add_valid_or_report+0x9a/0xa0 ... __list_add_valid_or_report+0x9a/0xa0 proto_register+0x2b5/0x340 iso_init+0x23/0x150 [bluetooth] set_iso_socket_func+0x68/0x1b0 [bluetooth] kmem_cache_free+0x308/0x330 hci_sock_sendmsg+0x990/0x9e0 [bluetooth] __sock_sendmsg+0x7b/0x80 sock_write_iter+0x9a/0x110 do_iter_readv_writev+0x11d/0x220 vfs_writev+0x180/0x3e0 do_writev+0xca/0x100 ... This change removes the early return. The check for iso_debugfs being NULL was unnecessary, it is always NULL when iso_inited is false.",
    "evidence": "osv:CVE-2024-50077",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
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        "prerequisites": [],
        "fixed_versions": [
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            "value": "6.1.114",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.58",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.11.5",
            "evidence": "/affected/1/ranges"
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    "severity": "high",
    "structured": {
      "id": "CVE-2024-50077",
      "aliases": [
        "CVE-2024-50077"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
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              "type": "ECOSYSTEM",
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
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          "database_specific": {
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      ],
      "modified": "2026-10-28T02:30:27.280629005Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/8fb8e912afb4c47dec12ea9a5853e7a8db95816f",
        "https://git.kernel.org/stable/c/a9b7b535ba192c6b77e6c15a4c82d853163eab8c",
        "https://git.kernel.org/stable/c/adf1b179c2ff8073c24bf87e5a605fcc5a09798b",
        "https://git.kernel.org/stable/c/fa4b832c5a6ec35023a1b997cf658c436619c752",
        "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50077.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-50077",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
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    "related_cves": [
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        "value": "CVE-2024-50077",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
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  "source_id": "core-osv",
  "document_id": 493658,
  "published_at": "2024-10-29T00:50:19.412+00:00"
}