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().
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 to < d7cc0d51ffcbfd1caaa809fcf9cff05c46d0fb4daffected67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 to < b8917dce2134739b39bc0a5648b18427f2cad569affected67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 to < 75b2c71ea581c7bb1303860d89366a42ad0506d2affected67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 to < 98ce10f3f345e61fc6c83bff9cd11cda252b05acaffected67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 to < 3124d320c22f3f4388d9ac5c8f37eaad0cefd6b1affectedf6ec33f6bd3723a8146768106434ef6ab3d9d990affected4a53c4e84ace1bc75157a7281af3fe8f5b19d08caffected4.14.63 to < 4.15affected
Linux Linux
Default version status: affected
4.15affected0 to < 4.15unaffected5.10.150 to ≤ 5.10.*unaffected5.15.75 to ≤ 5.15.*unaffected5.19.17 to ≤ 5.19.*unaffected6.0.3 to ≤ 6.0.*unaffected6.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/d7cc0d51ffcbfd1caaa809fcf9cff05c46d0fb4d ↗
- https://git.kernel.org/stable/c/b8917dce2134739b39bc0a5648b18427f2cad569 ↗
- https://git.kernel.org/stable/c/75b2c71ea581c7bb1303860d89366a42ad0506d2 ↗
- https://git.kernel.org/stable/c/98ce10f3f345e61fc6c83bff9cd11cda252b05ac ↗
- https://git.kernel.org/stable/c/3124d320c22f3f4388d9ac5c8f37eaad0cefd6b1 ↗