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avcodec/ra144: Fix undefined integer overflow in add_wav() 

Fixes: signed integer overflow: -26884 * 91439 cannot be represented in type 'int'
Fixes: 9687/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RA_144_fuzzer-4995588121690112

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 93a203662f)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2018-08-26 02:26:24 +02:00
parent 17a5df4ab8
commit 318b13a5ad
1 changed files with 1 additions and 1 deletions
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2
libavcodec/ra144.c
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@ -1516,7 +1516,7 @@ static void add_wav(int16_t *dest, int n, int skip_first, int *m,
if (v[0]) {
for (i=0; i < BLOCKSIZE; i++)
dest[i] = (s1[i]*v[0] + s2[i]*v[1] + s3[i]*v[2]) >> 12;
dest[i] = ((int)(s1[i]*(unsigned)v[0]) + s2[i]*v[1] + s3[i]*v[2]) >> 12;
} else {
for (i=0; i < BLOCKSIZE; i++)
dest[i] = ( s2[i]*v[1] + s3[i]*v[2]) >> 12;