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avformat/mxfdec: Check for duplicate mxf_read_index_entry_array()

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Fixes: memleak
Fixes: 41596/clusterfuzz-testcase-minimized-ffmpeg_dem_MXF_fuzzer-6439060204290048

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Tomas Härdin <tjoppen@acc.umu.se>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 4f44a218e53cd92e64ba10a935bc1e7583c3e218)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2021-12-05 22:19:05 +01:00
parent 4023a8af63
commit f4f397ebc1
1 changed files with 3 additions and 0 deletions
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3
libavformat/mxfdec.c
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@ -1092,6 +1092,9 @@ static int mxf_read_index_entry_array(AVIOContext *pb, MXFIndexTableSegment *seg
{ {
int i, length; int i, length;
if (segment->temporal_offset_entries)
return AVERROR_INVALIDDATA;
segment->nb_index_entries = avio_rb32(pb); segment->nb_index_entries = avio_rb32(pb);
length = avio_rb32(pb); length = avio_rb32(pb);