Anza's official validator client requirements specify running on Ubuntu 24.04 with a public IPv4 address, leaving Solana validators potentially exposed to CVE-2026-98432

From the articleSolana validators told to act immediately as critical Linux vulnerability emergesAlso in Solana validators told to filter traffic over unpatched Linux flaw, Anza Sounds the Alarm for Solana Validators on a Linux Bug Ubuntu Hasn't Fixed - Unchained