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avcodec/mpeg4videodec: Clear interlaced_dct for studio profile
Fixes: Out of array access Fixes: 13090/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG4_fuzzer-5408668986638336 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Kieran Kunhya <kierank@obe.tv> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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Diff for: libavcodec/mpeg4videodec.c

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@@ -3057,6 +3057,7 @@ static int decode_studio_vop_header(Mpeg4DecContext *ctx, GetBitContext *gb)
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return 0;
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s->partitioned_frame = 0;
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s->interlaced_dct = 0;
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s->decode_mb = mpeg4_decode_studio_mb;
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decode_smpte_tc(ctx, gb);

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