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avformat/idroqdec: Check chunk_size for being too large

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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 744a0b5206)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-11-29 02:58:34 +01:00
parent 8e7f5ecfca
commit 5497fa83f9
1 changed files with 3 additions and 0 deletions
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libavformat/idroqdec.c
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@ -157,6 +157,9 @@ static int roq_read_packet(AVFormatContext *s,
chunk_size = AV_RL32(&preamble[2]) + RoQ_CHUNK_PREAMBLE_SIZE * 2 +
codebook_size;
if (chunk_size > INT_MAX)
return AVERROR_INVALIDDATA;
/* rewind */
avio_seek(pb, codebook_offset, SEEK_SET);