CopyOverlayFail

CopyFail reuse labs for shared page-cache trust-boundary testing.

This repository does not claim a new vulnerability. It reuses the original CopyFail primitive in environments where separate workloads can reference the same underlying inode/page-cache object.

Labs:

• containers-lab/: two Ubuntu containers sharing the same image-layer executable.
• notebook-lab/: two Jupyter notebook-image containers sharing /opt/conda/bin/pip.

Shared tooling:

• sploit.py: generic CopyFail page-cache injector: sploit.py <target-filepath> <payload-elf>.
• make_pwnd_payload.py: builds payload.elf, a tiny ELF that prints PWND.