Temporary mitigations for CVE-2026-98432

This is a temporary mitigation guide for Linux kernel vulnerability CVE-2026-98432, rated CVSS 9.8. Anthropic's Frontier Red Team disclosed that a research Claude model built a zero-click remote root exploit chain against a Multipath TCP listener in a lab test, not a real-world incident. The guide advises checking whether MPTCP is enabled, disabling it, and restarting affected processes, stressing this is only a stopgap until a kernel update lands. It matters because AI can now chain a single flaw into a full exploit, so admins should shrink their exposed surface before patches arrive, while noting the attack path depends on a specific configuration.

• LinuxDo2026-10-30 03:25