[PATCH 4.4 01/92] ASoC: compress: fix unsigned integer overflow check

Greg Kroah-Hartman
2019-12-04T17:57:26Z

From: Xiaojun Sang <xsang@codeaurora.org>

[ Upstream commit d3645b055399538415586ebaacaedebc1e5899b0 ]

Parameter fragments and fragment_size are type of u32. U32_MAX is
the correct check.

Signed-off-by: Xiaojun Sang <xsang@codeaurora.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20191021095432.5639-1-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/core/compress_offload.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c
index 771d7b334ad87..07f5017cbea2a 100644
--- a/sound/core/compress_offload.c
+++ b/sound/core/compress_offload.c
@@ -501,7 +501,7 @@ static int snd_compress_check_input(struct snd_compr_params *params)
{
/* first let's check the buffer parameter's */
if (params->buffer.fragment_size == 0 ||
- params->buffer.fragments > INT_MAX / params->buffer.fragment_size ||
+ params->buffer.fragments > U32_MAX / params->buffer.fragment_size ||
params->buffer.fragments == 0)
return -EINVAL;

--
2.20.1