A critical Linux vulnerability named CopyFail (CVE-2026-31431) allows unprivileged users to gain root access across virtually all Linux distributions with a single exploit script. The flaw enables attackers to compromise multi-tenant systems, escape containers, and infiltrate CI/CD pipelines. Despite patches being available in some kernel versions, most distributions remained unpatched when the exploit was publicly released.
Background
Linux is the dominant operating system for servers, cloud infrastructure, and container environments, making widespread vulnerabilities particularly dangerous. Local privilege escalation flaws allow attackers who gain initial access to elevate their permissions to full system control.
- Source
- Ars Technica
- Published
- May 1, 2026 at 04:20 AM
- Score
- 9.0 / 10