static int cx24116_set_tone(struct dvb_frontend *fe,
	fe_sec_tone_mode_t tone)
{
	struct cx24116_cmd cmd;
	int ret;

	dprintk("%s(%d)\n", __func__, tone);
	if ((tone != SEC_TONE_ON) && (tone != SEC_TONE_OFF)) {
		printk(KERN_ERR "%s: Invalid, tone=%d\n", __func__, tone);
		return -EINVAL;
	}

	/* Wait for LNB ready */
	ret = cx24116_wait_for_lnb(fe);
	if (ret != 0)
		return ret;

	/* Min delay time after DiSEqC send */
	msleep(15); /* XXX determine is FW does this, see send_diseqc/burst */

	/* Now we set the tone */
	cmd.args[0x00] = CMD_SET_TONE;
	cmd.args[0x01] = 0x00;
	cmd.args[0x02] = 0x00;

	switch (tone) {
	case SEC_TONE_ON:
		dprintk("%s: setting tone on\n", __func__);
		cmd.args[0x03] = 0x01;
		break;
	case SEC_TONE_OFF:
		dprintk("%s: setting tone off\n", __func__);
		cmd.args[0x03] = 0x00;
		break;
	}
	cmd.len = 0x04;

	/* Min delay time before DiSEqC send */
	msleep(15); /* XXX determine is FW does this, see send_diseqc/burst */

	return cx24116_cmd_execute(fe, &cmd);
}

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.