linux-kernel - [PATCH 5.3 012/135] ASoC: compress: fix unsigned integer overflow check

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Date:   Tue,  3 Dec 2019 23:34:12 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Xiaojun Sang <xsang@...eaurora.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Vinod Koul <vkoul@...nel.org>, Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.3 012/135] ASoC: compress: fix unsigned integer overflow check

From: Xiaojun Sang <xsang@...eaurora.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@...eaurora.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Acked-by: Vinod Koul <vkoul@...nel.org>
Link: https://lore.kernel.org/r/20191021095432.5639-1-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.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 41905afada63f..f34ce564d92c4 100644
--- a/sound/core/compress_offload.c
+++ b/sound/core/compress_offload.c
@@ -528,7 +528,7 @@ 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