From: Christian Gromm <[email protected]> [ Upstream commit 45b754ae5b82949dca2b6e74fa680313cefdc813 ]
This patch checks the function parameter 'bytes' before doing the subtraction to prevent memory corruption. Signed-off-by: Christian Gromm <[email protected]> Reported-by: Dan Carpenter <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]> Signed-off-by: Sasha Levin <[email protected]> --- drivers/staging/most/aim-sound/sound.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/staging/most/aim-sound/sound.c b/drivers/staging/most/aim-sound/sound.c index 9c645801cff4d..532ec0f7100eb 100644 --- a/drivers/staging/most/aim-sound/sound.c +++ b/drivers/staging/most/aim-sound/sound.c @@ -92,6 +92,8 @@ 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]; -- 2.27.0 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
