gst_qtdemux_handle_src_query (GstPad * pad, GstQuery * query)
{
  gboolean res = FALSE;
  GstQTDemux *qtdemux = GST_QTDEMUX (gst_pad_get_parent (pad));

  switch (GST_QUERY_TYPE (query)) {
    case GST_QUERY_POSITION:
      if (GST_CLOCK_TIME_IS_VALID (qtdemux->segment.last_stop)) {
        gst_query_set_position (query, GST_FORMAT_TIME,
            qtdemux->segment.last_stop);
        res = TRUE;
      }
      break;
    case GST_QUERY_DURATION:{
      GstFormat fmt;

      gst_query_parse_duration (query, &fmt, NULL);
      if (fmt == GST_FORMAT_TIME) {
        gint64 duration = -1;

        gst_qtdemux_get_duration (qtdemux, &duration);
        if (duration > 0) {
          gst_query_set_duration (query, GST_FORMAT_TIME, duration);
          res = TRUE;
        }
      }
      break;
    }
    case GST_QUERY_SEEKING:{
      GstFormat fmt;

      gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
      if (fmt == GST_FORMAT_TIME) {
        gint64 duration = -1;

        gst_qtdemux_get_duration (qtdemux, &duration);
        gst_query_set_seeking (query, GST_FORMAT_TIME, qtdemux->pullbased,
            0, duration);
        res = TRUE;
      }
      break;
    }
    default:
      res = gst_pad_query_default (pad, query);
      break;
  }

  gst_object_unref (qtdemux);

  return res;
}

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.