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().
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.14.63, < 4.15 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/3124d320c22f3f4388d9ac5c8f37eaad0cefd6b1Patch
- https://git.kernel.org/stable/c/75b2c71ea581c7bb1303860d89366a42ad0506d2Patch
- https://git.kernel.org/stable/c/98ce10f3f345e61fc6c83bff9cd11cda252b05acPatch
- https://git.kernel.org/stable/c/b8917dce2134739b39bc0a5648b18427f2cad569Patch
- https://git.kernel.org/stable/c/d7cc0d51ffcbfd1caaa809fcf9cff05c46d0fb4dPatch
FAQ
What is CVE-2022-50374?
CVE-2022-50374 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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_clos...
How severe is CVE-2022-50374?
CVE-2022-50374 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-50374?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.