Dit is een major alert.
FreeBSD: A vulnerability exists in the FreeBSD kernel that could allow users to bypass access control and obtain elevated privileges, which they do not have permissions on FreeBSD versions 5.1-RELEASE and 5.2-RELEASE. The jail_attach function fails to properly validate privileges. By changing the root directory, a local attacker with superuser privileges in a jailed environment, could gain unauthorized access to another jail.
FreeBSD: To mitigate the threat, upgrade to the latest version of FreeBSD or apply the jail patch as listed in the FreeBSD Security Advisory FreeBSD-SA-04:03.jail.