ffmpeg | branch: release/4.1 | Michael Niedermayer <mich...@niedermayer.cc> | Thu Jun 6 23:17:18 2019 +0200| [e73ef454e89dcce85fbc8c12ccb5c6b73c7a343c] | committer: Michael Niedermayer
avformat/vpk: Check offset for validity Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit aa003019ab9ec5ef7e7b3ff9d6262d3472b427eb) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=e73ef454e89dcce85fbc8c12ccb5c6b73c7a343c --- libavformat/vpk.c | 3 +++ 1 file changed, 3 insertions(+) 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); _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
