mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/shorten: Fix undefined integer overflow
Fixes: signed integer overflow: 8454144 * 256 cannot be represented in type 'int' Fixes: 8788/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SHORTEN_fuzzer-5728205041303552 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -177,7 +177,7 @@ static void fix_bitshift(ShortenContext *s, int32_t *buffer)
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buffer[i] = 0;
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buffer[i] = 0;
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} else if (s->bitshift != 0) {
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} else if (s->bitshift != 0) {
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for (i = 0; i < s->blocksize; i++)
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for (i = 0; i < s->blocksize; i++)
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buffer[i] *= 1 << s->bitshift;
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buffer[i] *= 1U << s->bitshift;
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}
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}
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}
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}
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