Link Following vulnerability in Freebsd 2.2 FreeBSD allows local users to conduct a denial of service by creating a hard link from a device special file to a file on an NFS file system.
Credentials Management vulnerability in multiple products The asynchronous I/O facility in 4.4 BSD kernel does not check user credentials when setting the recipient of I/O notification, which allows local users to cause a denial of service by using certain ioctl and fcntl calls to cause the signal to be sent to an arbitrary process ID.