CVE-2006-5619: The seqfile handling (ip6fl_get_n function in ip6_flowlabel.c) in Linux kernel 2.6 up to 2.6.18-stable allo...

Security readout for executives and security teams

This is an old Linux kernel local denial-of-service issue. A local user could trigger a kernel hang or oops through IPv6 flowlabel seqfile handling. The sources do not show remote code execution, privilege escalation, or active exploitation. Business urgency depends mainly on whether legacy Linux 2.6 systems still exist. Exposure is most likely on unsupported legacy Linux 2.6 systems, older appliances, or vendor-maintained distributions referenced by Debian, Red Hat, SUSE, Mandriva, rPath, and Avaya advisories. Modern maintained kernels are unlikely to be affected, but inventory evidence is required. Treat this as a legacy exposure cleanup item unless affected systems support critical operations or untrusted local users. It can interrupt service, but the provided evidence does not show active exploitation or compromise of confidentiality or integrity. Mitigation focus: Identify any Linux 2.6 kernels up to 2.6.18-stable.; Apply fixed kernel packages from the relevant distribution or vendor advisory.; Prioritize replacement of unsupported legacy systems if vendor fixes are unavailable..

Prepared

Jun 29, 2026, 09:39 UTC (UTC+00:00)

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