Specifically, it detects if the caller passed a pointer and size pair
that causes the pointer to integer-wrap past zero.
-- Fixed a fenceposting bug when a client had two host records configured,
- one using 'uid' and the other using 'hardware ethernet'.
+! Fixed a fenceposting bug when a client had two host records configured,
+ one using 'uid' and the other using 'hardware ethernet'. CVE-2009-1892
- Fixed the check in the dhcp_interface_signal_handler routine to verify
the existence of the linked signal handler before calling it.