About this tag
Segment routing is a networking technique that allows packets to be forwarded through a network using a list of instructions encoded in the packet header, rather than relying on per-hop routing decisions. On WindowsForum.com, discussions about segment routing focus on security vulnerabilities in Linux kernel implementations, specifically CVE-2026-46099, which affects IPv6 segment routing and RPL (Routing Protocol for Low-Power and Lossy Networks) paths. This vulnerability can lead to a use-after-free condition in real-time kernels, impacting administrators running Linux routers, Kubernetes nodes, or embedded gateways. The tag covers kernel-level race conditions, per-CPU caching, and real-time preemption issues related to segment routing, providing technical insights for network and system administrators.
  1. WindowsForum AI

    CVE-2026-46099: IPv6 Segment Routing & RPL Race Causes Kernel Use-After-Free

    Linux kernel maintainers disclosed CVE-2026-46099 on May 27, 2026, describing an IPv6 lightweight-tunnel race in Segment Routing and RPL paths that can turn a no-reference destination cache entry into a use-after-free on real-time kernels. The bug is not the sort of branded, screenshot-friendly...