[FFmpeg-cvslog] nut: Check chapter creation in decode_info_header

[Andreas Cadhalpun]

ffmpeg | branch: release/2.4 | Andreas Cadhalpun <andreas.cadhalpun at googlemail.com> | Tue Apr 28 20:57:59 2015 +0200| [21b21aed797b5e636adcf2df811f96a95f208930] | committer: Vittorio Giovara

nut: Check chapter creation in decode_info_header

This fixes a segmentation fault when accessing the metadata.

Signed-off-by: Luca Barbato <lu_zero at gentoo.org>

CC: libav-stable at libav.org

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=21b21aed797b5e636adcf2df811f96a95f208930
---

 libavformat/nutdec.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavformat/nutdec.c b/libavformat/nutdec.c
index 36ca754..116c3d4 100644
--- a/libavformat/nutdec.c
+++ b/libavformat/nutdec.c
@@ -482,6 +482,10 @@ static int decode_info_header(NUTContext *nut)
                                      nut->time_base[chapter_start %
                                                     nut->time_base_count],
                                      start, start + chapter_len, NULL);
+        if (!chapter) {
+            av_log(s, AV_LOG_ERROR, "Could not create chapter.\n");
+            return AVERROR(ENOMEM);
+        }
         metadata = &chapter->metadata;
     } else if (stream_id_plus1) {
         st       = s->streams[stream_id_plus1 - 1];