CVE-2006-4572: Linux Kernel

High severity, CVSS 7.5. EPSS: 3.9% chance of exploitation in the next 30 days.

ip6_tables in netfilter in the Linux kernel before 2.6.16.31 allows remote attackers to (1) bypass a rule that disallows a protocol, via a packet with the protocol header not located immediately after the fragment header, aka "ip6_tables protocol bypass bug;" and (2) bypass a rule that looks for a certain extension header, via a packet with an extension header outside the first fragment, aka "ip6_tables extension header bypass bug."

Affected products

• Linux Linux Kernel: up to and including 2.6.16.30; version 2.6.0 only; version 2.6.1 only; version 2.6.2 only; version 2.6.3 only; version 2.6.4 only; …

Published 2006-11-07. Last modified 2026-06-16.