03/05/2026
A recently discovered Linux security issue, nicknamed “Copy Fail”, is raising concerns across the tech community. This flaw could allow attackers to exploit memory handling during data copying processes — potentially leading to system crashes or unauthorized access if left unpatched on almost every Linux distribution since 2017.
The bug is Copy Fail (CVE-2026-31431), disclosed today by Theori. A 732-byte Python script roots Ubuntu, Amazon Linux, RHEL, and SUSE — every Linux build since 2017 — through a logic flaw in the kernel’s crypto API. Theori’s writeup states that it was “surfaced by Xint Code about an hour of scan time against the Linux crypto/ subsystem,” with “one operator prompt, no harnessing.”
CVE-2026-31431. 100% Reliable Linux LPE — no race, no per-distro offsets, page-cache write that bypasses on-disk file-integrity tools and crosses containers. Found by Xint Code.