void parse_wait_interval(int argc, char *argv[], struct timeval *wait_interval)
{
	const char *arg;
	unsigned int usec;
	int ret;

	if (optarg)
		arg = optarg;
	else if (xs_has_arg(argc, argv))
		arg = argv[optind++];
	else
		xtables_error(PARAMETER_PROBLEM, "wait interval value required");

	ret = sscanf(arg, "%u", &usec);
	if (ret == 1) {
		if (usec > 999999)
			xtables_error(PARAMETER_PROBLEM,
				      "too long usec wait %u > 999999 usec",
				      usec);

		wait_interval->tv_sec = 0;
		wait_interval->tv_usec = usec;
		return;
	}
	xtables_error(PARAMETER_PROBLEM, "wait interval not numeric");
}

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.