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avcodec/h264idct_template: Fix integer overflow in ff_h264_chroma422_dc_dequant_idct()
Fixes: signed integer overflow: 241173056 + 1953511200 cannot be represented in type 'int' Fixes: 26086/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_H264_fuzzer-5068366420901888 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 d1983628394e076001cc67d85656f9842b7282a3) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -278,7 +278,7 @@ void FUNCC(ff_h264_chroma422_dc_dequant_idct)(int16_t *_block, int qmul){
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const int stride= 16*2;
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const int xStride= 16;
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int i;
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int temp[8];
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unsigned temp[8];
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static const uint8_t x_offset[2]={0, 16};
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dctcoef *block = (dctcoef*)_block;
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