evutil_make_listen_socket_reuseable_port(evutil_socket_t sock)
{
#if defined __linux__ && defined(SO_REUSEPORT)
	int one = 1;
	/* REUSEPORT on Linux 3.9+ means, "Multiple servers (processes or
	 * threads) can bind to the same port if they each set the option. */
	return setsockopt(sock, SOL_SOCKET, SO_REUSEPORT, (void*) &one,
	    (ev_socklen_t)sizeof(one));
#else
	return 0;
#endif
}

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.