Worked on stability and security improvements for OpenWrt firmware, focusing on the DragonBluep/openwrt and namiltd/openwrt repositories. Over two months, addressed four critical bugs in C, emphasizing memory management, error handling, and embedded systems reliability. Implemented fixes for buffer overflows, corrected memory allocation and cleanup routines, and improved error checking in MTD utilities to prevent data corruption and resource leaks. Enhanced code hygiene by removing dead code and validating system calls, ensuring safer firmware operations across devices. The work demonstrated a methodical approach to system programming, prioritizing robustness and maintainability in embedded Linux environments through targeted, traceable code changes.