2 days ago Xint Code disclosed a Linux kernel flaw they have named Copy Fail.
This will effect any distribution of Linux that had a kernel built from 2017.
Over the next few days expect patches to be released, and some distros such as Alma have already pushed fixes.
Take the time to run a kernel upgrade if you are running any hosting scenario where a user has the opportunity to upload code (addon exploitation most likely from a bad actor), you provide them terminal access or similar.
copy.fail
This will effect any distribution of Linux that had a kernel built from 2017.
Over the next few days expect patches to be released, and some distros such as Alma have already pushed fixes.
Take the time to run a kernel upgrade if you are running any hosting scenario where a user has the opportunity to upload code (addon exploitation most likely from a bad actor), you provide them terminal access or similar.
Copy Fail — 732 Bytes to Root
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.
copy.fail
It's been a wild few days.
