CVE-2022-50374

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().

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/3124d320c22f3f4388d9ac5c8f37eaad0cefd6b1	Patch
https://git.kernel.org/stable/c/75b2c71ea581c7bb1303860d89366a42ad0506d2	Patch
https://git.kernel.org/stable/c/98ce10f3f345e61fc6c83bff9cd11cda252b05ac	Patch
https://git.kernel.org/stable/c/b8917dce2134739b39bc0a5648b18427f2cad569	Patch
https://git.kernel.org/stable/c/d7cc0d51ffcbfd1caaa809fcf9cff05c46d0fb4d	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2025-09-17 15:15

Updated : 2026-01-14 19:16

NVD link : CVE-2022-50374

Mitre link : CVE-2022-50374

CVE.ORG link : CVE-2022-50374

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-908

Use of Uninitialized Resource

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