CVE-2007-4567: The ipv6_hop_jumbo function in net/ipv6/exthdrs.c in the Linux kernel before 2.6.22 does not properly valid...

Security readout for executives and security teams

This flaw can let a remote sender crash an affected Linux system with a specially crafted IPv6 packet. The business impact is availability loss, not data theft. The issue is very old, so priority depends on whether any legacy Linux kernels before 2.6.22 or vendor-unpatched backports still exist. Exposure is mainly legacy Linux systems running kernels before 2.6.22 or distribution kernels missing the relevant vendor backport. Internet-facing or untrusted-network IPv6-enabled hosts would matter most. The source bundle does not provide a complete affected product matrix. Treat as a legacy exposure check. It is not a modern widespread emergency based on provided evidence, but any affected IPv6-reachable system could be remotely crashed and should be patched or retired. Mitigation focus: Identify Linux systems running kernels before 2.6.22 or unsupported vendor kernels.; Apply vendor-supported kernel updates or fixed backported packages.; Review Red Hat and Ubuntu advisories for distribution-specific remediation..

Prepared

Jun 28, 2026, 19:45 UTC (UTC+00:00)

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