gtk3-3.22.26-4.el7, libepoxy-1.3.1-2.el7

The GTK library provides a multi-platform toolkit for creating graphical user interfaces. The gtk3 packages contain GTK version 3.

The libepoxy packages provide a library for handling OpenGL function pointer management.

This update fixes the following bugs:

* Previously, certain types of the X Server program, such as Windows Exceed and xrdp, caused errors in the GTK library. As a consequence, GTK applications terminated unexpectedly when run against the affected X Servers. This update modifies GTK to avoid division by zero when there is no adequate refresh rate. As a result, GTK applications successfully start when run against the affected X Servers. (BZ#1565096)

* Due to lack of support for OpenGL Extension to X Windows System (GLX) extensions, GTK applications terminated unexpectedly when run against certain X Server programs, such as X2Go and Xvfb. This update modifies the libepoxy library to work around the absence of GLX support. As a result, GTK applications start successfully when run against the mentioned X Servers. (BZ#1566585)

Users of gtk3 and libepoxy are advised to upgrade to these updated packages, which fix these bugs.