CVE-2007-1876
VMware Workstation before 5.5.4, when running a 64-bit Windows guest on a 64-bit host, allows local users to "corrupt the virtual machine’s register context" by debugging a local program and stepping into a "syscall instruction."
Date published : 2007-05-02
http://www.securityfocus.com/bid/23732
http://www.securityfocus.com/archive/1/467936/30/6690/threaded