Theori

'A single 732-byte Python script can be used to obtain root on essentially all Linux distributions shipped since…

A severe vulnerability nicknamed 'Copy Fail' allows local users to gain root privileges on most Linux distributions released since 2017 by exploiting a flaw in the page cache. Theori disclosed the vulnerability (CVE-2026-31431), which threat actors are already using in the wild, prompting CISA to add it to its Known Exploited Vulnerabilities Catalog.