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| author | Martin Storsjö <martin@martin.st> | 2013-09-11 22:53:15 +0300 |
|---|---|---|
| committer | Luca Barbato <lu_zero@gentoo.org> | 2013-10-03 20:29:36 +0200 |
| commit | 557df77eab7d3726c34221aeb999afe9e7818d52 (patch) | |
| tree | ad3bcb60becfa721a74acfbf2fca4110b8988578 | |
| parent | f8a72f041c049e812dfa1f32156327e9778f5710 (diff) | |
| download | ffmpeg-557df77eab7d3726c34221aeb999afe9e7818d52.tar.gz | |
mpc8: Make sure the first stream exists before parsing the seek table
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
(cherry picked from commit 17d57848fc14e82f76a65ffb25c90f2f011dc4a0)
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
| -rw-r--r-- | libavformat/mpc8.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavformat/mpc8.c b/libavformat/mpc8.c index 66cf01ab73..c7aa87519c 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){ |