From 17d57848fc14e82f76a65ffb25c90f2f011dc4a0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Martin=20Storsj=C3=B6?= Date: Wed, 11 Sep 2013 22:53:15 +0300 Subject: [PATCH] mpc8: Make sure the first stream exists before parsing the seek table MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org Signed-off-by: Martin Storsjö --- libavformat/mpc8.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavformat/mpc8.c b/libavformat/mpc8.c index 29001b19f6..3564e81c32 100644 --- a/libavformat/mpc8.c +++ b/libavformat/mpc8.c @@ -139,6 +139,11 @@ static void mpc8_parse_seektable(AVFormatContext *s, int64_t off) int i, t, seekd; GetBitContext gb; + if (s->nb_streams == 0) { + av_log(s, AV_LOG_ERROR, "No stream added before parsing seek table\n"); + return; + } + avio_seek(s->pb, off, SEEK_SET); mpc8_get_chunk_header(s->pb, &tag, &size); if(tag != TAG_SEEKTABLE){