Podman rootless containers and the Copy Fail exploit | Hacker News

A Hacker News discussion says Podman’s rootless isolation may not fully stop Copy Fail.

The key risk is unauthorized overwrite of read-only files, not just weaker container boundaries.

Because container images can share layers, one container may still influence another.

The debate raises doubts about how much protection Docker, Podman, or Kubernetes really provide against CVE-2026-31431.