VulHunt in Practice: Detecting a Remote Code Execution Vulnerability in rsync

We walk through writing a VulHunt rule to detect CVE-2024-12084, a heap-based buffer overflow in rsync. Starting from understanding the vulnerability's root cause, we build detection logic step by step — covering rule metadata, function scoping, annotation, order guarantees, and decompiler queries — culminating in a production-ready rule that pinpoints the exact vulnerable code path in stripped bi