USN-3675-3: GnuPG vulnerability
GnuPG could be made to incorrectly interpret the status of the cryptographic operation if it received specially crafted file. Available for Ubuntu 12.04 ESM

USN-3687-1: WebKitGTK+ vulnerabilities
A large number of security issues were discovered in the WebKitGTK+ Web and JavaScript engines. Available for Ubuntu 16.04 LTS, 17.10, and 18.04 LTS