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ffmpeg
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avformat/moflex: Check pkt_size 

Fixes: Timeout (>20sec -> 1ms)
Fixes: 26527/clusterfuzz-testcase-minimized-ffmpeg_dem_MOFLEX_fuzzer-6308307310215168

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-10-25 00:23:07 +02:00
parent 42ccef2846
commit 40348637be
1 changed files with 2 additions and 0 deletions
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2
libavformat/moflex.c
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@ -316,6 +316,8 @@ static int moflex_read_packet(AVFormatContext *s, AVPacket *pkt)
}
pkt_size = pop_int(br, pb, 13) + 1;
if (pkt_size > m->size)
return AVERROR_INVALIDDATA;
packet = s->streams[stream_index]->priv_data;
if (!packet) {
avio_skip(pb, pkt_size);