Sources
Fireship: '732 Bytes of Python Just Borked Every Linux Machine on Earth' — CopyFail Explainer
Fireship's latest video breaks down CVE-2026-31431 (CopyFail) for a developer audience, explaining how a logic bug in the Linux kernel's cryptographic template allows a trivial 732-byte Python script using only standard library modules to achieve root on any major Linux distro since 2017. The video highlights the straight-line exploit path (no race conditions or timing windows) and the 9-year window before discovery, making it one of the most accessible kernel privilege escalation exploits in recent memory.
Source
↳ Follow the thread