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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-06-06 23:17:18 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-01 12:11:55 +0200 |
| commit | b07457f4c47c542afeb14ece516f9991e0605eeb (patch) | |
| tree | f86e983bd8bd7663ea6a19e448a94ad2684afa85 | |
| parent | bf34934436a8966a090948a59d3b73407f5920c9 (diff) | |
| download | ffmpeg-b07457f4c47c542afeb14ece516f9991e0605eeb.tar.gz | |
avformat/vpk: Check offset for validity
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit aa003019ab9ec5ef7e7b3ff9d6262d3472b427eb)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/vpk.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavformat/vpk.c b/libavformat/vpk.c index 0a058b9d7f..64a0d56926 100644 --- a/libavformat/vpk.c +++ b/libavformat/vpk.c @@ -66,6 +66,9 @@ static int vpk_read_header(AVFormatContext *s) return AVERROR_INVALIDDATA; vpk->block_count = (st->duration + (samples_per_block - 1)) / samples_per_block; vpk->last_block_size = (st->duration % samples_per_block) * 16 * st->codecpar->channels / 28; + + if (offset < avio_tell(s->pb)) + return AVERROR_INVALIDDATA; avio_skip(s->pb, offset - avio_tell(s->pb)); avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate); |