get_lease(struct dhcp_lease *lease, const struct dhcp_message *dhcp)
{
 struct timeval now;

	lease->cookie = dhcp->cookie;
 /* BOOTP does not set yiaddr for replies when ciaddr is set. */
 if (dhcp->yiaddr)
		lease->addr.s_addr = dhcp->yiaddr;
 else
		lease->addr.s_addr = dhcp->ciaddr;
 if (get_option_addr(&lease->net, dhcp, DHO_SUBNETMASK) == -1)
		lease->net.s_addr = get_netmask(lease->addr.s_addr);
 if (get_option_addr(&lease->brd, dhcp, DHO_BROADCAST) == -1)
		lease->brd.s_addr = lease->addr.s_addr | ~lease->net.s_addr;
 if (get_option_uint32(&lease->leasetime, dhcp, DHO_LEASETIME) == 0) {
 /* Ensure that we can use the lease */
		get_monotonic(&now);
 if (now.tv_sec + (time_t)lease->leasetime < now.tv_sec)
			lease->leasetime = ~0U; /* Infinite lease */
 } else
		lease->leasetime = ~0U; /* Default to infinite lease */
 if (get_option_uint32(&lease->renewaltime, dhcp, DHO_RENEWALTIME) != 0)
		lease->renewaltime = 0;
 if (get_option_uint32(&lease->rebindtime, dhcp, DHO_REBINDTIME) != 0)
		lease->rebindtime = 0;
 if (get_option_addr(&lease->server, dhcp, DHO_SERVERID) != 0)
		lease->server.s_addr = INADDR_ANY;
}

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.