Census Labs have discovered two improper input validation vulnerabilities in the FreeBSD kernel’s NFS client-side implementation (FreeBSD 8.0-RELEASE, 7.3-RELEASE and 7.2-RELEASE) that allow local unprivileged users to escalate their privileges, or to crash the system by performing a denial of service attack.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/90053/census-2010-001.txt
Source: https://packetstormsecurity.com/files/90053/NFS-Improper-Input-Validation.html