The Netfilter project maintains the packet filter component of the Linux kernel. A fix for a denial of service vulnerability has been reported by the
Netfilter project. The vulnerability is present on systems with the ip_nat_ftp or ip_nat_irc modules loaded or with a kernel built supporting options
CONFIG_IP_NF_NAT_FTP or CONFIG_IP_NF_NAT_IRC.
September 26, 2003