int regulator_is_supported_voltage(struct regulator *regulator,
				   int min_uV, int max_uV)
{
	struct regulator_dev *rdev = regulator->rdev;
	int i, voltages, ret;

	/* If we can't change voltage check the current voltage */
	if (!(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE)) {
		ret = regulator_get_voltage(regulator);
		if (ret >= 0)
			return min_uV <= ret && ret <= max_uV;
		else
			return ret;
	}

	/* Any voltage within constrains range is fine? */
	if (rdev->desc->continuous_voltage_range)
		return min_uV >= rdev->constraints->min_uV &&
				max_uV <= rdev->constraints->max_uV;

	ret = regulator_count_voltages(regulator);
	if (ret < 0)
		return ret;
	voltages = ret;

	for (i = 0; i < voltages; i++) {
		ret = regulator_list_voltage(regulator, i);

		if (ret >= min_uV && ret <= max_uV)
			return 1;
	}

	return 0;
}

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.