static void sig_winch(int sig) {
	unsigned short width,height;
	struct mt_packet data;
	int plen;

	/* terminal height/width has changed, inform server */
	if (get_terminal_size(&width, &height) != -1) {
		init_packet(&data, MT_PTYPE_DATA, srcmac, dstmac, sessionkey, outcounter);
		width = htole16(width);
		height = htole16(height);
		plen = add_control_packet(&data, MT_CPTYPE_TERM_WIDTH, &width, 2);
		plen += add_control_packet(&data, MT_CPTYPE_TERM_HEIGHT, &height, 2);
		outcounter += plen;

		send_udp(&data, 1);
	}

	/* reinstate signal handler */
	signal(SIGWINCH, sig_winch);
}

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.