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avcodec/lossless_audiodsp: Fix undefined overflows in scalarproduct_and_madd_int16_c()

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Fixes: signed integer overflow: 2142077091 + 6881070 cannot be represented in type 'int'
Fixes: 22737/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMALOSSLESS_fuzzer-5958388889681920

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit c0dfe134be)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-06-07 19:24:10 +02:00
parent 78c0117119
commit b27f530916
1 changed files with 1 additions and 1 deletions
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libavcodec/lossless_audiodsp.c
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@ -27,7 +27,7 @@ static int32_t scalarproduct_and_madd_int16_c(int16_t *v1, const int16_t *v2,
const int16_t *v3,
int order, int mul)
{
int res = 0;
unsigned res = 0;
do {
res += *v1 * *v2++;