SAP SAPCAR allows local users to change the permissions of arbitrary files and consequently gain privileges via a hard link attack on files extracted from an archive, possibly related to SAP Security Note 2327384.
packetstormsecurity.com/files/138284/SAP-CAR-Archive-Tool-Denial-Of-Service-Security-Bypass.html
seclists.org/fulldisclosure/2016/Aug/46
www.securityfocus.com/archive/1/539180/100/0/threaded
www.securityfocus.com/bid/92406
www.coresecurity.com/advisories/sap-car-multiple-vulnerabilities
www.exploit-db.com/exploits/40230/