Severe Linux Copy Fail security flaw uncovered using AI scanning help

A severe security vulnerability named 'Copy Fail' (CVE-2026-31431) has been discovered in nearly all Linux distributions since 2017, allowing users to escalate privileges to administrator level via a Python script. The exploit, uncovered by security firm Theori, requires no distribution-specific adjustments and poses a significant risk due to its stealthy nature, as highlighted by Ars Technica and DevOps engineer Jorijn Schrijvershof.