VULNERABILITY INTELLIGENCE
CVE-2022-50374
CVSS score5.5 MEDIUM
EPSS probability0.21%
CISA KEVNot currently listed
Published2025-09-17
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Description
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().
Weakness classification
- nvd@nist.gov: CWE-908
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-908