CVE-2006-0038: Integer overflow in the do_replace function in netfilter for Linux before 2.6.16-rc3, when using "virtualiz...

Security readout for executives and security teams

This is an old Linux kernel netfilter flaw. A local user who already has CAP_NET_ADMIN, especially inside some virtualization setups such as OpenVZ, could trigger memory corruption. It is not described as remotely exploitable, and the supplied sources do not show active exploitation. Exposure is most likely on legacy Linux 2.6 systems or vendor kernels derived from affected releases, especially systems granting CAP_NET_ADMIN to containers or local users. Modern maintained kernels are unlikely to be exposed, but old appliances or archived virtualization hosts should be checked. Treat as a legacy infrastructure cleanup item unless vulnerable kernels still support business workloads. Prioritize virtualization hosts and appliances first, because delegated network administration rights can make a local kernel bug operationally significant. Mitigation focus: Upgrade to a vendor kernel containing the upstream netfilter fix.; Apply relevant Red Hat, Debian, Ubuntu, or appliance vendor kernel advisories.; Review container profiles and avoid granting CAP_NET_ADMIN unless required..

Prepared

Jun 29, 2026, 13:35 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.