Microsoft has detailed a high-severity Linux kernel vulnerability that can allow a local, unprivileged user to gain root access on affected systems.
The flaw, tracked as CVE-2026-31431 and also referred to as “Copy Fail,” affects multiple Linux distributions used in enterprise and cloud environments. Microsoft said affected platforms include Red Hat, SUSE, Ubuntu, Amazon Linux, Debian, Fedora, and Arch Linux, depending on kernel version and patch status.
The vulnerability has a CVSS score of 7.8. Microsoft said it affects Linux kernels…
