Buffer overflow in IBM Informix Dynamic Server (IDS) 9.40.xC1 and 9.40.xC2 allows local users to execute arbitrary code via a long GL_PATH environment variable.
https://exchange.xforce.ibmcloud.com/vulnerabilities/14949
http://www.securityfocus.com/bid/9511
http://www-1.ibm.com/support/docview.wss?uid=swg21153336