New xorg-server packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, 14.2, and -current to fix security issues.
Xorg-server Security Update (SSA:2017-227-01) for Slackware
Xorg-server Security Update (SSA:2017-227-01) for Slackware
