Gentoo has issued an update for dhcp. This fixes a weakness, which can be exploited by malicious people to cause a DoS (Denial of Service).

The weakness is caused due to an integer overflow error, which can be exploited to crash the server if a large "dhcp-max-message-size" was specified by a client.

Note: Successful exploitation requires a server configuration which provides clients with an unlikely amount of DHCP options.

Solution
Update to "net-misc/dhcp-3.1.1" or later.
Original Advisory
http://www.gentoo.org/security/en/glsa/glsa-200808-05.xml

Other references
Further details available to Secunia VIM customers

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