DL::dlopen in Ruby 1.8, 1.9.0, 1.9.2, 1.9.3, 2.0.0 before patchlevel 648, and 2.1 before 2.1.8 opens libraries with tainted names. http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2009-5147