y5neko/copy-fail-cve-2026-31431-universalMulti-language implementation and compatibility with older versions of Python.
Multi-language implementation and compatibility with older versions of Python.
exploit.c)gcc -o exploit exploit.c -O2
gcc -o exploit exploit.c -static -O2
./exploit
Tested on Ubuntu 20.04:
exploit-python3-8-10.py)Compatible with Python 3.8.10 and older. Compat notes:
os.splice() requires 3.10+ — uses ctypes to call libc directlysplice()setsockopt(..., None, 4) raises TypeError on 3.8 — uses integer formzlib-compressed hexpython3 exploit-python3-8-10.py
Tested on Ubuntu 20.04 / Python 3.8.10:
For authorized security research and testing only.