Gdb Server

How buffer overflow happens in C gdb-server and how to fix it

A critical buffer overflow vulnerability was discovered in `src/st-util/gdb-server.c` where unbounded `memcpy()` and `strcpy()` calls could write beyond allocated buffer boundaries when processing user-supplied command-line arguments. The fix replaces all unsafe string operations with bounds-checked alternatives like `snprintf()` and `memcpy()` with explicit length validation.