AMD fglrx-driver before 15.9 allows local users to gain privileges via a symlink attack. NOTE: This vulnerability exists due to an incomplete fix for CVE-2015-7723.
packetstormsecurity.com/files/134120/AMD-fglrx-driver-15.7-Privilege-Escalation.html
seclists.org/fulldisclosure/2015/Oct/103
www.securityfocus.com/archive/1/536782/100/0/threaded
www.securityfocus.com/bid/77361
www.portcullis-security.com/security-research-and-downloads/security-advisories/cve-2015-7724/