Linux.com

Yahoo: "Programmers have found a vulnerability in Linux (news - web sites) that could allow protective firewall software to grant malicious computer users access to protected networks. The flaw, which affects versions 2.4.14 through 2.4.18-pre9 of the Linux kernel, is in a component of the Netfilter firewall software. The component is involved when two computer users chat directly with each other using the Internet Relay Chat (IRC) system."