Mark Hatle enhanced the zephyrproject-rtos/poky repository by improving the reliability of CVE database updates under restricted network conditions. He focused on build systems and system configuration, using Python to ensure that a local CVE database is always available when network updates are skipped. Mark implemented explicit error handling to prevent silent failures if the database is missing, particularly when updates are disabled, which improved offline resilience and compliance with security requirements. His work provided maintainers with clearer visibility into CVE data availability, enabling more predictable behavior and faster triage during network outages or in environments with limited connectivity.