CopyFail exposes a universal Linux root exploit across containers and CI/CD
The CopyFail vulnerability (CVE-2026-31431) is a universal local privilege escalation in the Linux kernel that, with publicly released exploit code, can grant root across most distributions, threatening multi-tenant servers, Kubernetes containers, and CI/CD workflows; patches exist for some kernel versions, but many distros had not applied them when the exploit appeared, creating a dangerous zero-day patch gap that defenders are racing to mitigate.