Worked on stability hardening for the radareorg/radare2 project, focusing on memory safety within Visual Mode. Addressed a critical double-free vulnerability that occurred when highlighting strings of 32 or more characters, which previously led to crashes and memory leaks. The solution involved careful debugging and disciplined memory management in C, targeting a high-risk rendering path to ensure robust handling of string highlighting. No new features were introduced during this period, as the primary effort centered on resolving this core issue and improving codebase reliability. The work demonstrated a methodical approach to debugging and maintaining stability in a complex C codebase.