linux nftables

The linux nftables tag on WindowsForum.com covers discussions about the Linux kernel's nftables packet classification framework, particularly in the context of security vulnerabilities and input validation. Recent content highlights CVE-2026-46101, a vulnerability where malformed nftables bitwise shift rules could trigger undefined behavior in netfilter's nft_bitwise packet-processing path. The fix involved a small validation change to refuse impossible input before it reaches vulnerable code. This tag is relevant for users interested in Linux firewall internals, kernel security patches, and lessons in defensive programming within the netfilter subsystem.