Linux Kernel Zero-Day “Copy Fail” Gives Root Access Across Major Distributions Since 2017
A newly disclosed zero-day vulnerability in the Linux kernel could allow any unprivileged local user to gain root access on nearly all major Linux distributions released since 2017. Known as “Copy Fail” and tracked as CVE-2026-31431, the flaw was initially identified by Theori researcher Taeyang Lee and later developed into a complete exploit chain by the Xint Code Research Team with AI-assisted...