CVE-2003-0467: Linux Kernel

Medium severity, CVSS 5.0. EPSS: 1.9% chance of exploitation in the next 30 days.

Unknown vulnerability in ip_nat_sack_adjust of Netfilter in Linux kernels 2.4.20, and some 2.5.x, when CONFIG_IP_NF_NAT_FTP or CONFIG_IP_NF_NAT_IRC is enabled, or the ip_nat_ftp or ip_nat_irc modules are loaded, allows remote attackers to cause a denial of service (crash) in systems using NAT, possibly due to an integer signedness error.

Affected products

• Linux Linux Kernel: version 2.4.20 only; version 2.4.21 only

Published 2003-08-27. Last modified 2026-06-16.