mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/ituh263dec: Fix runtime error: left shift of 1342177279 by 1 places cannot be represented in type 'int'
Fixes: 659/clusterfuzz-testcase-5866673603084288 Huge DMV could be created by an encoder ignoring the spec Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -303,6 +303,10 @@ static int h263p_decode_umotion(MpegEncContext * s, int pred)
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{
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{
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code <<= 1;
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code <<= 1;
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code += get_bits1(&s->gb);
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code += get_bits1(&s->gb);
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if (code >= 32768) {
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avpriv_request_sample(s->avctx, "Huge DMV");
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return AVERROR_INVALIDDATA;
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}
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}
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}
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sign = code & 1;
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sign = code & 1;
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code >>= 1;
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code >>= 1;
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