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
(bnc#1052984)
CVE-2017-13723: A local denial of service via unusual characters in XkbAtomText and XkbStringText was fixed (bnc#1051150)
CVE-2017-12184,CVE-2017-12185,CVE-2017-12186,CVE-2017-12187: Fixed
unvalidated lengths in multiple extensions (bsc#1063034)
CVE-2017-12183: Fixed some unvalidated lengths in the XFIXES
extension. (bsc#1063035)
CVE-2017-12180,CVE-2017-12181,CVE-2017-12182: Fixed various unvalidated
lengths in the XFree86-VidMode/XFree86-DGA/XFree86-DRI extensions
(bsc#1063037)
CVE-2017-12179: Fixed an integer overflow and unvalidated length in
(S)ProcXIBarrierReleasePointer in Xi (bsc#1063038)
CVE-2017-12178: Fixed a wrong extra length check in
ProcXIChangeHierarchy in Xi (bsc#1063039)
CVE-2017-12177: Fixed an unvalidated variable-length request in
ProcDbeGetVisualInfo (bsc#1063040)
CVE-2017-12176: Fixed an unvalidated extra length in
ProcEstablishConnection (bsc#1063041)
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. (bsc#1061107)
Recognize ssh as a remote client to fix launching applications remotely when using DRI3.
(bsc#1022727)