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avcodec/dxtory: Fix negative shift in dx2_decode_slice_410()
Fixes: left shift of negative value -768 Fixes: 25574/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXTORY_fuzzer-6012596027916288 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> (cherry picked from commit abebd87764992dc22c82802bdc75d40aac14ab86) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -399,7 +399,7 @@ static int dx2_decode_slice_410(GetBitContext *gb, int width, int height,
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V[x >> 2] = decode_sym(gb, lru[2]) ^ 0x80;
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}
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Y += ystride << 2;
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Y += ystride * 4;
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U += ustride;
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V += vstride;
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}
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