1 files changed, 6 insertions, 1 deletions
diff --git a/ext/dv/gstdvdec.c b/ext/dv/gstdvdec.c
index d7500cc6..e28f8362 100644
--- a/ext/dv/gstdvdec.c
+++ b/ext/dv/gstdvdec.c
@@ -161,9 +161,14 @@ GST_PAD_TEMPLATE_FACTORY ( audio_src_temp,
 static GstCaps*
 dv_type_find (GstBuffer *buf, gpointer private)
 {
-  guint32 head = GUINT32_FROM_BE(*((guint32 *)GST_BUFFER_DATA(buf)));
+  guint32 head;
   GstCaps *new = NULL;
 
+  if (GST_BUFFER_SIZE (buf) < 5)
+    return NULL;
+
+  head = GUINT32_FROM_BE(*((guint32 *)GST_BUFFER_DATA(buf)));
+
   /* check for DIF  and DV flag */
   if ((head & 0xffffff00) == 0x1f070000 && !(GST_BUFFER_DATA(buf)[4] & 0x01)) {
     gchar *format;