[USN-5437-1] libXfixes vulnerability

========================================================================== Ubuntu Security Notice USN-5437-1 May 23, 2022
libxfixes vulnerability ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 16.04 ESM
libXfixes could be made to crash or run programs if it received specially crafted input.
Software Description: – libxfixes: X11 miscellaneous fixes extension library
Tobias Stoeckmann discovered that libXfixes incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service, or possibly execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04 ESM: libxfixes3 1:5.0.1-2ubuntu0.1~esm1
In general, a standard system update will make all the necessary changes.
References: ubuntu.com/security/notices/USN-5437-1 CVE-2016-7944