static int cx24116_load_firmware(struct dvb_frontend *fe,
	const struct firmware *fw)
{
	struct cx24116_state *state = fe->demodulator_priv;
	struct cx24116_cmd cmd;
	int i, ret, len, max, remaining;
	unsigned char vers[4];

	dprintk("%s\n", __func__);
	dprintk("Firmware is %zu bytes (%02x %02x .. %02x %02x)\n",
			fw->size,
			fw->data[0],
			fw->data[1],
			fw->data[fw->size-2],
			fw->data[fw->size-1]);

	/* Toggle 88x SRST pin to reset demod */
	if (state->config->reset_device)
		state->config->reset_device(fe);

	/* Begin the firmware load process */
	/* Prepare the demod, load the firmware, cleanup after load */

	/* Init PLL */
	cx24116_writereg(state, 0xE5, 0x00);
	cx24116_writereg(state, 0xF1, 0x08);
	cx24116_writereg(state, 0xF2, 0x13);

	/* Start PLL */
	cx24116_writereg(state, 0xe0, 0x03);
	cx24116_writereg(state, 0xe0, 0x00);

	/* Unknown */
	cx24116_writereg(state, CX24116_REG_CLKDIV, 0x46);
	cx24116_writereg(state, CX24116_REG_RATEDIV, 0x00);

	/* Unknown */
	cx24116_writereg(state, 0xF0, 0x03);
	cx24116_writereg(state, 0xF4, 0x81);
	cx24116_writereg(state, 0xF5, 0x00);
	cx24116_writereg(state, 0xF6, 0x00);

	/* Split firmware to the max I2C write len and write.
	 * Writes whole firmware as one write when i2c_wr_max is set to 0. */
	if (state->config->i2c_wr_max)
		max = state->config->i2c_wr_max;
	else
		max = INT_MAX; /* enough for 32k firmware */

	for (remaining = fw->size; remaining > 0; remaining -= max - 1) {
		len = remaining;
		if (len > max - 1)
			len = max - 1;

		cx24116_writeregN(state, 0xF7, &fw->data[fw->size - remaining],
			len);
	}

	cx24116_writereg(state, 0xF4, 0x10);
	cx24116_writereg(state, 0xF0, 0x00);
	cx24116_writereg(state, 0xF8, 0x06);

	/* Firmware CMD 10: VCO config */
	cmd.args[0x00] = CMD_SET_VCO;
	cmd.args[0x01] = 0x05;
	cmd.args[0x02] = 0xdc;
	cmd.args[0x03] = 0xda;
	cmd.args[0x04] = 0xae;
	cmd.args[0x05] = 0xaa;
	cmd.args[0x06] = 0x04;
	cmd.args[0x07] = 0x9d;
	cmd.args[0x08] = 0xfc;
	cmd.args[0x09] = 0x06;
	cmd.len = 0x0a;
	ret = cx24116_cmd_execute(fe, &cmd);
	if (ret != 0)
		return ret;

	cx24116_writereg(state, CX24116_REG_SSTATUS, 0x00);

	/* Firmware CMD 14: Tuner config */
	cmd.args[0x00] = CMD_TUNERINIT;
	cmd.args[0x01] = 0x00;
	cmd.args[0x02] = 0x00;
	cmd.len = 0x03;
	ret = cx24116_cmd_execute(fe, &cmd);
	if (ret != 0)
		return ret;

	cx24116_writereg(state, 0xe5, 0x00);

	/* Firmware CMD 13: MPEG config */
	cmd.args[0x00] = CMD_MPEGCONFIG;
	cmd.args[0x01] = 0x01;
	cmd.args[0x02] = 0x75;
	cmd.args[0x03] = 0x00;
	if (state->config->mpg_clk_pos_pol)
		cmd.args[0x04] = state->config->mpg_clk_pos_pol;
	else
		cmd.args[0x04] = 0x02;
	cmd.args[0x05] = 0x00;
	cmd.len = 0x06;
	ret = cx24116_cmd_execute(fe, &cmd);
	if (ret != 0)
		return ret;

	/* Firmware CMD 35: Get firmware version */
	cmd.args[0x00] = CMD_UPDFWVERS;
	cmd.len = 0x02;
	for (i = 0; i < 4; i++) {
		cmd.args[0x01] = i;
		ret = cx24116_cmd_execute(fe, &cmd);
		if (ret != 0)
			return ret;
		vers[i] = cx24116_readreg(state, CX24116_REG_MAILBOX);
	}
	printk(KERN_INFO "%s: FW version %i.%i.%i.%i\n", __func__,
		vers[0], vers[1], vers[2], vers[3]);

	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.