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CVE-2022-50374

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CVE-2022-50374

Published: Sep 17, 2025

Modified: May 23, 2026

PUBLISHED

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().

VendorProductVersions

Linux

Linux

affected
67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 - < d7cc0d51ffcbfd1caaa809fcf9cff05c46d0fb4d
affected
67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 - < b8917dce2134739b39bc0a5648b18427f2cad569
affected
67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 - < 75b2c71ea581c7bb1303860d89366a42ad0506d2
affected
67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 - < 98ce10f3f345e61fc6c83bff9cd11cda252b05ac
affected
67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 - < 3124d320c22f3f4388d9ac5c8f37eaad0cefd6b1

+3 more versions

Linux

Linux

affected
4.15
unaffected
0 - < 4.15
unaffected
5.10.150 - <= 5.10.*
unaffected
5.15.75 - <= 5.15.*
unaffected
5.19.17 - <= 5.19.*

+2 more versions

References

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