As a follow up to our copy fail research, here is our post sharing our PoC for container escape of this bug, which is part of why it was so unique https://xint.io/blog/copy-fail-pod-to-host
Copy Fail:
From Pod to Host. - Xint
A walkthrough of Copy Fail (CVE-2026-31431) as a container escape primitive: from a 4-byte page cache write to host root on Kubernetes. | Vulnerability Research, AI for Security, Open Source Projects
Xint