static int cx24116_read_signal_strength(struct dvb_frontend *fe,
	u16 *signal_strength)
{
	struct cx24116_state *state = fe->demodulator_priv;
	struct cx24116_cmd cmd;
	int ret;
	u16 sig_reading;

	dprintk("%s()\n", __func__);

	/* Firmware CMD 19: Get AGC */
	cmd.args[0x00] = CMD_GETAGC;
	cmd.len = 0x01;
	ret = cx24116_cmd_execute(fe, &cmd);
	if (ret != 0)
		return ret;

	sig_reading =
		(cx24116_readreg(state,
			CX24116_REG_SSTATUS) & CX24116_SIGNAL_MASK) |
		(cx24116_readreg(state, CX24116_REG_SIGNAL) << 6);
	*signal_strength = 0 - sig_reading;

	dprintk("%s: raw / cooked = 0x%04x / 0x%04x\n",
		__func__, sig_reading, *signal_strength);

	return 0;
}

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.