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avformat/cafdec: Check for EOF in index read loop

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Fixes: OOM
Fixes: 27398/clusterfuzz-testcase-minimized-ffmpeg_dem_CAF_fuzzer-541296033975500

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 eb46939e3a)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-11-18 00:58:37 +01:00
parent 6723d6db9b
commit aeef24785a
1 changed files with 2 additions and 0 deletions
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2
libavformat/cafdec.c
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@ -207,6 +207,8 @@ static int read_pakt_chunk(AVFormatContext *s, int64_t size)
st->duration = 0;
for (i = 0; i < num_packets; i++) {
if (avio_feof(pb))
return AVERROR_INVALIDDATA;
av_add_index_entry(s->streams[0], pos, st->duration, 0, 0, AVINDEX_KEYFRAME);
pos += caf->bytes_per_packet ? caf->bytes_per_packet : ff_mp4_read_descr_len(pb);
st->duration += caf->frames_per_packet ? caf->frames_per_packet : ff_mp4_read_descr_len(pb);