ruby1.9.1: Object-oriented scripting language - ruby2.0: Object-oriented scripting language Details: USN-3621-1 fixed vulnerabilities in Ruby. The update caused an issue due to an incomplete patch for CVE-2018-1000074. This update reverts the problematic patch pending further investigation. We apologize for the inconvenience. Original advisory USN-3621-1 caused a regression in Ruby.