A security issue was fixed in libffi.
It was discovered that libffi incorrectly enforced an executable stack. An attacker could possibly use this issue, in combination with another vulnerability, to facilitate executing arbitrary code.
12 October 2017
A security issue affects these releases of Ubuntu and its derivatives:
A security issue was fixed in libffi.
It was discovered that libffi incorrectly enforced an executable stack. An attacker could possibly use this issue, in combination with another vulnerability, to facilitate executing arbitrary code.
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
Vulmon