Researchers dropped a reliable root exploit and it didnt sit idle for long CISA is warning that a newly disclosed Linux kernel bug dubbed CopyFail is already being exploited, just days after researchers dropped a working root level exploit. Tracked as CVE 2026 31431, the bug sits in the Linux kernel and gives low level users a way to take full control of a system by modifying data they should only be able to read, effectively turning limited access into full root privileges on unpatched mach
