diff options
| author | Christian Gromm <christian.gromm@microchip.com> | 2021-02-02 17:21:05 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-02-04 17:13:46 +0100 |
| commit | 45b754ae5b82949dca2b6e74fa680313cefdc813 (patch) | |
| tree | 4dd3b1d491a1bb86d1a7a7835a4b80a676f3738d /drivers/staging/most | |
| parent | 06b0c0dce88e2aa2f01343db0f26d214d7f264a0 (diff) | |
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: Christian Gromm <christian.gromm@microchip.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/1612282865-21846-1-git-send-email-christian.gromm@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/most')
| -rw-r--r-- | drivers/staging/most/sound/sound.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/staging/most/sound/sound.c b/drivers/staging/most/sound/sound.c index 3a1a59058042..45befb8c1126 100644 --- a/drivers/staging/most/sound/sound.c +++ b/drivers/staging/most/sound/sound.c @@ -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]; |