static int send_release(uint32_t server, uint32_t ciaddr)
{
	struct dhcp_packet packet;

	/* Fill in: op, htype, hlen, cookie, chaddr, random xid fields,
	 * client-id option (unless -C), message type option:
	 */
	init_packet(&packet, DHCPRELEASE);

	/* DHCPRELEASE uses ciaddr, not "requested ip", to store IP being released */
	packet.ciaddr = ciaddr;

	udhcp_add_simple_option(&packet, DHCP_SERVER_ID, server);

	bb_info_msg("Sending release...");
	/* Note: normally we unicast here since "server" is not zero.
	 * However, there _are_ people who run "address-less" DHCP servers,
	 * and reportedly ISC dhcp client and Windows allow that.
	 */
	return bcast_or_ucast(&packet, ciaddr, server);
}

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.