Open Source Summit Korea 2026

Service operators often face a constant friction: maintaining high Service Level Indicators (SLIs) versus addressing immediate security vulnerabilities. While userspace updates cause minimal disruption, mitigating Linux kernel vulnerabilities traditionally mandates a full system reboot, forcing administrators into the dilemma of choosing between proactive security practices and continuous uptime.

This session explores the workings of Linux kernel live patching, details how a livepatch kernel module is built, examines the internal mechanisms that power the technology (e.g., ftrace), and provides a practical overview of the current ecosystem so administrators can start using live patches immediately.