int parse_counters(const char *string, struct xt_counters *ctr)
{
	int ret;

	if (!string)
		return 0;

	ret = sscanf(string, "[%llu:%llu]",
		     (unsigned long long *)&ctr->pcnt,
		     (unsigned long long *)&ctr->bcnt);

	return ret == 2;
}

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.