Worked on stabilizing the RTP path in the kamailio/kamailio repository by addressing a critical use-after-free vulnerability in the RTP engine. Applied expertise in C programming, concurrent programming, and system programming to ensure that only valid parameters are used when logging duplicate hash entries, thereby reducing memory-safety risks and potential crash vectors under high load. The solution improved both the stability and reliability of real-time media processing by validating input before logging, which enhanced memory safety and logging accuracy. This work demonstrated a careful, security-focused approach to maintaining core media components in a complex, high-performance codebase.