FreeBSD: 'kernel' Local DoS
Source: News Forge
A race condition existed where a file could be removed between calling fstatfs() and the point where the file is accessed causing the file descriptor to become invalid. This may allow unprivileged local users to cause a kernel panic. Currently only the procfs filesystem is known to be vulnerable. On vulnerable FreeBSD systems where procfs is mounted, unprivileged local users may be able to cause a kernel panic.