ghsa-jrjj-g8hj-84fg
Vulnerability from github
Published
2025-09-17 15:30
Modified
2025-09-17 15:30
Details

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure

syzbot is reporting NULL pointer dereference at hci_uart_tty_close() [1], for rcu_sync_enter() is called without rcu_sync_init() due to hci_uart_tty_open() ignoring percpu_init_rwsem() failure.

While we are at it, fix that hci_uart_register_device() ignores percpu_init_rwsem() failure and hci_uart_unregister_device() does not call percpu_free_rwsem().

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50374"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-17T15:15:36Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure\n\nsyzbot is reporting NULL pointer dereference at hci_uart_tty_close() [1],\nfor rcu_sync_enter() is called without rcu_sync_init() due to\nhci_uart_tty_open() ignoring percpu_init_rwsem() failure.\n\nWhile we are at it, fix that hci_uart_register_device() ignores\npercpu_init_rwsem() failure and hci_uart_unregister_device() does not\ncall percpu_free_rwsem().",
  "id": "GHSA-jrjj-g8hj-84fg",
  "modified": "2025-09-17T15:30:38Z",
  "published": "2025-09-17T15:30:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50374"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3124d320c22f3f4388d9ac5c8f37eaad0cefd6b1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/75b2c71ea581c7bb1303860d89366a42ad0506d2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/98ce10f3f345e61fc6c83bff9cd11cda252b05ac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b8917dce2134739b39bc0a5648b18427f2cad569"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d7cc0d51ffcbfd1caaa809fcf9cff05c46d0fb4d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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