| Description: | In the Linux kernel, the following vulnerability has been resolved:
serial: mxs-auart: add spinlock around changing cts state The
uart_handle_cts_change() function in serial_core expects the caller to
hold uport->lock. For example, I have seen the below kernel splat,
when the Bluetooth driver is loaded on an i.MX28 board. [ 85.119255]
------------[ cut here ]------------ [ 85.124413] WARNING: CPU: 0 PID:
27 at /drivers/tty/serial/serial_core.c:3453
uart_handle_cts_change+0xb4/0xec [ 85.134694] Modules linked in:
hci_uart bluetooth ecdh_generic ecc wlcore_sdio configfs [ 85.143314]
CPU: 0 PID: 27 Comm: kworker/u3:0 Not tainted
6.6.3-00021-gd62a2f068f92 #1 [ 85.151396] Hardware name: Freescale MXS
(Device Tree) [ 85.156679] Workqueue: hci0 hci_power_on [bluetooth]
(...) [ 85.191765] uart_handle_cts_change from
mxs_auart_irq_handle+0x380/0x3f4 [ 85.198787] mxs_auart_irq_handle
from __handle_irq_event_percpu+0x88/0x210 (...)
|
