[FFmpeg-devel] [PATCH] bink: check vst->index_entries before using it

[Andreas Cadhalpun]

This fixes a NULL pointer dereference if vst->duration is 0.

The problem was introduced in commit 0588acaf.

Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun at googlemail.com>
---
 libavformat/bink.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libavformat/bink.c b/libavformat/bink.c
index 92ce261..332edbb 100644
--- a/libavformat/bink.c
+++ b/libavformat/bink.c
@@ -194,7 +194,10 @@ static int read_header(AVFormatContext *s)
             return ret;
     }
 
-    avio_seek(pb, vst->index_entries[0].pos, SEEK_SET);
+    if (vst->index_entries)
+        avio_seek(pb, vst->index_entries[0].pos, SEEK_SET);
+    else
+        avio_skip(pb, 4);
 
     bink->current_track = -1;
     return 0;
-- 
2.1.4