A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS
GnuPG could be made to expose sensitive information.
- - gnupg: GNU privacy guard - a free PGP replacement
Daniel J. Bernstein, Joachim Breitner, Daniel Genkin, Leon Groot Bruinderink,
Nadia Heninger, Tanja Lange, Christine van Vredendaal, and Yuval Yarom
discovered that GnuPG is vulnerable to a cache side-channel attack. A local
attacker could use this attack to recover RSA private keys.
The problem can be corrected by updating your system to the following