[FFmpeg-cvslog] avformat/vpk: check samples_per_block size
Paul B Mahol
git at videolan.org
Sat Nov 21 21:59:42 CET 2015
ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Sat Nov 21 21:58:24 2015 +0100| [16195aad75d7350c192628d7c72c17fd44d138bd] | committer: Paul B Mahol
avformat/vpk: check samples_per_block size
Signed-off-by: Paul B Mahol <onemda at gmail.com>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=16195aad75d7350c192628d7c72c17fd44d138bd
---
libavformat/vpk.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libavformat/vpk.c b/libavformat/vpk.c
index ad60aa3..7519049 100644
--- a/libavformat/vpk.c
+++ b/libavformat/vpk.c
@@ -62,6 +62,8 @@ static int vpk_read_header(AVFormatContext *s)
if (st->codec->channels <= 0)
return AVERROR_INVALIDDATA;
samples_per_block = ((st->codec->block_align / st->codec->channels) * 28) / 16;
+ if (samples_per_block <= 0)
+ 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->codec->channels / 28;
avio_skip(s->pb, offset - avio_tell(s->pb));
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