evutil_freeaddrinfo(struct evutil_addrinfo *ai)
{
#ifdef EVENT__HAVE_GETADDRINFO
	if (!(ai->ai_flags & EVUTIL_AI_LIBEVENT_ALLOCATED)) {
		freeaddrinfo(ai);
		return;
	}
#endif
	while (ai) {
		struct evutil_addrinfo *next = ai->ai_next;
		if (ai->ai_canonname)
			mm_free(ai->ai_canonname);
		mm_free(ai);
		ai = next;
	}
}

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.