qtdemux_parse_udta (GstQTDemux * qtdemux, GNode * udta)
{
  GNode *meta;
  GNode *ilst;
  GNode *node;
  gint i;

  meta = qtdemux_tree_get_child_by_type (udta, FOURCC_meta);
  if (meta != NULL) {
    ilst = qtdemux_tree_get_child_by_type (meta, FOURCC_ilst);
    if (ilst == NULL) {
      GST_LOG_OBJECT (qtdemux, "no ilst");
      return;
    }
  } else {
    ilst = udta;
    GST_LOG_OBJECT (qtdemux, "no meta so using udta itself");
  }

  GST_DEBUG_OBJECT (qtdemux, "new tag list");
  qtdemux->tag_list = gst_tag_list_new ();

  for (i = 0; i < G_N_ELEMENTS (add_funcs); ++i) {
    node = qtdemux_tree_get_child_by_type (ilst, add_funcs[i].fourcc);
    if (node) {
      add_funcs[i].func (qtdemux, add_funcs[i].gst_tag,
          add_funcs[i].gst_tag_bis, node);
      g_node_destroy (node);
    }
  }

  /* parsed nodes have been removed, pass along remainder as blob */
  g_node_children_foreach (ilst, G_TRAVERSE_ALL,
      (GNodeForeachFunc) qtdemux_tag_add_blob, qtdemux);

}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.