static int cxusb_read_status(struct dvb_frontend *fe,
				  enum fe_status *status)
{
	struct dvb_usb_adapter *adap = (struct dvb_usb_adapter *)fe->dvb->priv;
	struct cxusb_state *state = (struct cxusb_state *)adap->dev->priv;
	int ret;

	ret = state->fe_read_status(fe, status);

	/* it need resync slave fifo when signal change from unlock to lock.*/
	if ((*status & FE_HAS_LOCK) && (!state->last_lock)) {
		mutex_lock(&state->stream_mutex);
		cxusb_streaming_ctrl(adap, 1);
		mutex_unlock(&state->stream_mutex);
	}

	state->last_lock = (*status & FE_HAS_LOCK) ? 1 : 0;
	return ret;
}

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.