Unspecified vulnerability in NWFS.SYS in Novell Client for Windows 4.91 SP4 has unknown impact and attack vectors, possibly related to IOCTL requests that overwrite arbitrary memory.
https://exchange.xforce.ibmcloud.com/vulnerabilities/43460
http://www.vupen.com/english/advisories/2008/1968/references
http://www.securitytracker.com/id?1020385
http://www.securityfocus.com/bid/30001
http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5028543.html