bink: check vst->index_entries before using it
authorAndreas Cadhalpun <andreas.cadhalpun@googlemail.com>
Wed, 22 Apr 2015 15:08:51 +0000 (17:08 +0200)
committerMichael Niedermayer <michaelni@gmx.at>
Wed, 22 Apr 2015 18:22:19 +0000 (20:22 +0200)
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@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
libavformat/bink.c

index 92ce261..332edbb 100644 (file)
@@ -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;