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avcodec/avpacket: Limit iterations in ff_packet_split_and_drop_side_data() 

This avoids scaning beyond what a valid packet can contain
Fixes: Timeout
Fixes: 541/clusterfuzz-testcase-610189291657625

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 2017-06-11 22:08:04 +02:00
parent d24043e1a2
commit 07339a45a0
1 changed files with 2 additions and 0 deletions
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2
libavcodec/avpacket.c
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@ -495,6 +495,8 @@ int ff_packet_split_and_drop_side_data(AVPacket *pkt){
if (p - pkt->data < size + 5)
return 0;
p-= size+5;
if (i > AV_PKT_DATA_NB)
return 0;
}
pkt->size = p - pkt->data - size;
av_assert0(pkt->size >= 0);