Severe Linux Security Flaw 'Copy Fail' Exposed, Patches Released for Some Distributions
A critical security vulnerability known as 'Copy Fail' has been identified in nearly every Linux distribution released since 2017. The flaw, disclosed as CVE-2026-31431, allows users to gain administrator privileges through a Python script that operates across all affected distributions without requiring specific offsets or recompilation. The vulnerability was discovered by Theori, a security firm, with the aid of their AI tool, Xint Code. The exploit is particularly concerning because it can go undetected by monitoring tools, as it does not mark the page dirty, preventing writeback machinery from flushing modified bytes to disk. While some distributions like Arch Linux, RedHat Fedora, and Amazon Linux have released patches, many others have yet to address the issue. 
