Worked on enhancing filesystem robustness and safety in the tiiuae/nuttx repository, focusing on core VFS directory operations. Addressed a critical use-after-free vulnerability in directory rename logic by removing recursive handling and refactoring the move path for improved reliability. The solution involved targeted changes in C, emphasizing bug fixing and filesystem development to ensure safer directory moves and reduce the risk of regressions. These updates improved the security and maintainability of production deployments by strengthening the underlying filesystem code. The work demonstrated a methodical approach to identifying and resolving complex issues in low-level systems programming within a short timeframe.