Via Dan Goodin, Security Editor at Ars Technica, comes news of OpenBSD, Debian, CentOS, Ubuntu and Red Hat Linux flaws - in existence for an estimated 23-months (and just discovered).

'An advisory X.org developers published Thursday disclosed the 23-month-old bug that, depending on how OS developers configure it, lets hackers or untrusted users elevate very limited system rights to unfettered root.' - via Dan Goodin, Security Editor at Ars Technica