mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/mpeg4videodec: more unsigned in amv computation
Fixes: signed integer overflow: -2147483648 + -1048576 cannot be represented in type 'int' Fixes: 59365/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG4_fuzzer-642654923954585 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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@ -861,7 +861,7 @@ static inline int get_amv(Mpeg4DecContext *ctx, int n)
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for (y = 0; y < 16; y++) {
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int v;
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v = mb_v + dy * y;
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v = mb_v + (unsigned)dy * y;
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// FIXME optimize
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for (x = 0; x < 16; x++) {
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sum += v >> shift;
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