A critical zero-day vulnerability in the Linux kernel has been publicly disclosed, allowing any unprivileged local user to gain full root access on virtually every major Linux distribution shipped since 2017. Tracked as CVE-2026-31431 and dubbed “Copy Fail,” the flaw was discovered by Theori researcher Taeyang Lee and weaponized into a full exploit chain by the Xint Code Research […] The post Linux Kernel 0-Day “Copy Fail” Affects Distros Since 2017 appeared first on Cyber Security News.