Andi Shyti c88a91ca26 serial: ma35d1: Validate console index before assignment
commit f0b9d97a77 upstream.

The console is immediately assigned to the ma35d1 port without
checking its index. This oversight can lead to out-of-bounds
errors when the index falls outside the valid '0' to
MA35_UART_NR range. Such scenario trigges ran error like the
following:

 UBSAN: array-index-out-of-bounds in drivers/tty/serial/ma35d1_serial.c:555:51
 index -1 is out of range for type 'uart_ma35d1_port [17]

Check the index before using it and bail out with a warning.

Fixes: 930cbf92db ("tty: serial: Add Nuvoton ma35d1 serial driver support")
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Cc: Jacky Huang <ychuang3@nuvoton.com>
Cc: <stable@vger.kernel.org> # v6.5+
Link: https://lore.kernel.org/r/20231204163804.1331415-2-andi.shyti@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-12-13 18:45:31 +01:00
2023-10-19 16:40:00 +02:00
2023-12-13 18:45:22 +01:00
…
…
2023-12-11 10:40:17 +01:00
…

Linux kernel
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