Bluetooth: hci_conn: Fix crash on hci_create_cis_sync

{
  "id": "16857323c1aa16c1bf183ab87ee38943a4437b5969c89df924fe1b8c918a7fc5",
  "url": "https://osv.dev/vulnerability/CVE-2022-50447",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Bluetooth: hci_conn: Fix crash on hci_create_cis_sync",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: Fix crash on hci_create_cis_sync When attempting to connect multiple ISO sockets without using DEFER_SETUP may result in the following crash: BUG: KASAN: null-ptr-deref in hci_create_cis_sync+0x18b/0x2b0 Read of size 2 at addr 0000000000000036 by task kworker/u3:1/50 CPU: 0 PID: 50 Comm: kworker/u3:1 Not tainted 6.0.0-rc7-02243-gb84a13ff4eda #4373 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-1.fc36 04/01/2014 Workqueue: hci0 hci_cmd_sync_work Call Trace: dump_stack_lvl+0x19/0x27 kasan_report+0xbc/0xf0 ? hci_create_cis_sync+0x18b/0x2b0 hci_create_cis_sync+0x18b/0x2b0 ? get_link_mode+0xd0/0xd0 ? __ww_mutex_lock_slowpath+0x10/0x10 ? mutex_lock+0xe0/0xe0 ? get_link_mode+0xd0/0xd0 hci_cmd_sync_work+0x111/0x190 process_one_work+0x427/0x650 worker_thread+0x87/0x750 ? process_one_work+0x650/0x650 kthread+0x14e/0x180 ? kthread_exit+0x50/0x50 ret_from_fork+0x22/0x30",
    "evidence": "osv:CVE-2022-50447",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.0.16",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-50447",
      "aliases": [
        "CVE-2022-50447"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "26afbd826ee326e63a334c37fd45e82e50a615ec"
                },
                {
                  "fixed": "a190cd9dc62d6ebeb679c1abe9dda4162dfefc84"
                },
                {
                  "fixed": "09a3b0c9c7c6b10587fbb610b718014703cff341"
                },
                {
                  "fixed": "50757a259ba78c4e938b5735e76ffec6cd0c942e"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50447.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.0.0"
                },
                {
                  "fixed": "6.0.16"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.1.0"
                },
                {
                  "fixed": "6.1.2"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50447.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.816254828Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/09a3b0c9c7c6b10587fbb610b718014703cff341",
        "https://git.kernel.org/stable/c/50757a259ba78c4e938b5735e76ffec6cd0c942e",
        "https://git.kernel.org/stable/c/a190cd9dc62d6ebeb679c1abe9dda4162dfefc84",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50447.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50447",
        "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-2022-50447.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-50447",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 499785,
  "published_at": "2025-10-01T11:45:21.804+00:00"
}