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avformat/mxfdec: only return stream indexes which have a corresponding track

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Without this check some crafted files might crash because a packet might be
demuxed which have no corresponding mxf track.

Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint 2018-07-04 01:23:45 +02:00
parent 3e0f3be2b0
commit e5ff2c0c06
1 changed files with 1 additions and 1 deletions
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libavformat/mxfdec.c
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@ -423,7 +423,7 @@ static int mxf_get_stream_index(AVFormatContext *s, KLVPacket *klv, int body_sid
return i;
}
/* return 0 if only one stream, for OP Atom files with 0 as track number */
return s->nb_streams == 1 ? 0 : -1;
return s->nb_streams == 1 && s->streams[0]->priv_data ? 0 : -1;
}
static int find_body_sid_by_offset(MXFContext *mxf, int64_t offset)