CVE-2022-50374
Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure
CVSS Score
5.5
EPSS Score
0.0%
EPSS Percentile
0th
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().
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 17, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 < d7cc0d51ffcbfd1caaa809fcf9cff05c46d0fb4d 67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 < b8917dce2134739b39bc0a5648b18427f2cad569 67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 < 75b2c71ea581c7bb1303860d89366a42ad0506d2 67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 < 98ce10f3f345e61fc6c83bff9cd11cda252b05ac 67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 < 3124d320c22f3f4388d9ac5c8f37eaad0cefd6b1 f6ec33f6bd3723a8146768106434ef6ab3d9d990 4a53c4e84ace1bc75157a7281af3fe8f5b19d08c
Linux / Linux
4.15
References
git.kernel.org: https://git.kernel.org/stable/c/d7cc0d51ffcbfd1caaa809fcf9cff05c46d0fb4d git.kernel.org: https://git.kernel.org/stable/c/b8917dce2134739b39bc0a5648b18427f2cad569 git.kernel.org: https://git.kernel.org/stable/c/75b2c71ea581c7bb1303860d89366a42ad0506d2 git.kernel.org: https://git.kernel.org/stable/c/98ce10f3f345e61fc6c83bff9cd11cda252b05ac git.kernel.org: https://git.kernel.org/stable/c/3124d320c22f3f4388d9ac5c8f37eaad0cefd6b1