Directory traversal vulnerability in priocntl system call in Solaris does allows local users to execute arbitrary code via ".." sequences in the pc_clname field of a pcinfo_t structure, which cause priocntl to load a malicious kernel module.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A3637
http://www.securityfocus.com/bid/6262
http://www.kb.cert.org/vuls/id/683673
http://www.iss.net/security_center/static/10717.php
http://sunsolve.Sun.COM/pub-cgi/retrieve.pl?doc=fsalert/49131