USN-3500-1: libXfont vulnerability
29 November 2017
libXfont could be made to access arbitrary files, including special device files.
It was discovered that libXfont incorrectly followed symlinks when opening
font files. A local unprivileged user could use this issue to cause the X
server to access arbitrary files, including special device files.
The problem can be corrected by updating your system to the following package versions:
After a standard system update you need to reboot your computer to make
all the necessary changes.