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avformat/mov: Disallow duplicate smdm
Fixes: memleak Fixes: 39879/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-5327819907923968 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 b5ba74053c1ef9f38d9e7b3a036675f06d2b2714) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -4847,6 +4847,9 @@ static int mov_read_smdm(MOVContext *c, AVIOContext *pb, MOVAtom atom)
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av_log(c->fc, AV_LOG_WARNING, "Unsupported Mastering Display Metadata box version %d\n", version);
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return 0;
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}
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if (sc->mastering)
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return AVERROR_INVALIDDATA;
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avio_skip(pb, 3); /* flags */
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sc->mastering = av_mastering_display_metadata_alloc();
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