The vulnerability may allow an attacker to gain root privilege on the NFS server. Caldera recommends upgrading to the latest version. The problem has been corrected in the 2.2.12 kernel. This is similar to the problem reported in Section 8C of this digest. All versions up to COL 2.3 are vulnerable and there is no workaround.
Patched versions are available on the Calder FTP site.
The problems have been corrected in version 3.5-2. Fixed versions are available on the Debian source update site. The first is in the nfs-server module where a buffer overflow error exists. The problem has been corrected in version 2.2beta37-1slink.1. Debian recommends you upgrade immediately.