fkie_cve-2022-50374
Vulnerability from fkie_nvd
Published
2025-09-17 15:15
Modified
2025-09-18 13:43
Severity ?
Summary
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().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3124d320c22f3f4388d9ac5c8f37eaad0cefd6b1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/75b2c71ea581c7bb1303860d89366a42ad0506d2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/98ce10f3f345e61fc6c83bff9cd11cda252b05ac
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b8917dce2134739b39bc0a5648b18427f2cad569
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d7cc0d51ffcbfd1caaa809fcf9cff05c46d0fb4d
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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": "CVE-2022-50374",
  "lastModified": "2025-09-18T13:43:34.310",
  "metrics": {},
  "published": "2025-09-17T15:15:36.427",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3124d320c22f3f4388d9ac5c8f37eaad0cefd6b1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/75b2c71ea581c7bb1303860d89366a42ad0506d2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/98ce10f3f345e61fc6c83bff9cd11cda252b05ac"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b8917dce2134739b39bc0a5648b18427f2cad569"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d7cc0d51ffcbfd1caaa809fcf9cff05c46d0fb4d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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