CVE-2022-50374
Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure
Summary
Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure
Original description
The description as published by the source.
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().
Affected packages
Linux
Kernel
[{"type":"ECOSYSTEM","events":[{"introduced":"4.15.0"},{"fixed":"5.10.150"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.75"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"5.19.17"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.20.0"},{"fixed":"6.0.3"}]}]
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2022-50374 linux Fixed in: 5.10.158-1
- Ubuntu UBUNTU-CVE-2022-50374 linux-azure
References
- advisory github.com
- advisory nvd.nist.gov
- package git.kernel.org
- web git.kernel.org
- web git.kernel.org
- web git.kernel.org
- web git.kernel.org
- web git.kernel.org