Commit 45b754ae authored by Christian Gromm's avatar Christian Gromm Committed by Greg Kroah-Hartman
Browse files

staging: most: sound: add sanity check for function argument 



This patch checks the function parameter 'bytes' before doing the
subtraction to prevent memory corruption.

Signed-off-by: default avatarChristian Gromm <christian.gromm@microchip.com>
Reported-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/1612282865-21846-1-git-send-email-christian.gromm@microchip.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 06b0c0dc

drivers/staging/most/sound/sound.c

+2 −0
Original line number Diff line number Diff line
@@ -86,6 +86,8 @@ static void swap_copy24(u8 *dest, const u8 *source, unsigned int bytes) 
{

	unsigned int i = 0;



	if (bytes < 2)

		return;

	while (i < bytes - 2) {

		dest[i] = source[i + 2];

		dest[i + 1] = source[i + 1];