This update for xorg-x11-server fixes several issues. These security issues were fixed: - CVE-2017-13721: Missing validation of shmseg resource id in Xext/XShm could lead to shared memory segments of other users beeing freed - CVE-2017-13723: A local denial of service via unusual characters in XkbAtomText and XkbStringText was fixed - CVE-2017-12184,CVE-2017-12185,CVE-2017-12186,CVE-2017-12187: Fixed unvalidated lengths in multiple extensions - CVE-2017-12183: Fixed some unvalidated lengths in the XFIXES extension. - CVE-2017-12180,CVE-2017-12181,CVE-2017-12182: Fixed various unvalidated lengths in the XFree86-VidMode/XFree86-DGA/XFree86-DRI extensions - CVE-2017-12179: Fixed an integer overflow and unvalidated length in ProcXIBarrierReleasePointer in Xi - CVE-2017-12178: Fixed a wrong extra length check in ProcXIChangeHierarchy in Xi - CVE-2017-12177: Fixed an unvalidated variable-length request in ProcDbeGetVisualInfo - CVE-2017-12176: Fixed an unvalidated extra length in ProcEstablishConnection These non-security issues were fixed: - Make colormap/gamma glue code work with the RandR extension disabled. This prevents it from crashing and showing wrong colors. - Recognize ssh as a remote client to fix launching applications remotely when using DRI3