CVE-2022-50374 - CVE House
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Status published Unknown CVE-2022-50374

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

Vulnerability 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().

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Linux
Vulnerable Versions:
67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2, f6ec33f6bd3723a8146768106434ef6ab3d9d990, 4a53c4e84ace1bc75157a7281af3fe8f5b19d08c, 4.14.63, 4.15, 0, 5.10.150, 5.15.75, 5.19.17, 6.0.3, 6.1

Timeline

Official Publish: September 17th, 2025
Last Modified: May 23rd, 2026
Added to House: July 21st, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.