WARNING: New Linux Vulnerability Enables Root Access Across Every Major Linux Distribution

A newly disclosed security flaw in the Linux kernel is raising serious concerns across the cybersecurity community, after researchers revealed that it can grant full root access on a wide range of systems with remarkable reliability.

The vulnerability—tracked as CVE-2026-31431 and dubbed “Copy Fail”—affects Linux kernel versions released over nearly a decade, potentially exposing millions of systems worldwide. The flaw is particularly dangerous due to its simplicity, portability, and high success rate.