Red Hat Security Advisory: Xorg security and bug fix update

CVE-2018-14598 — libX11: Crash on invalid reply in XListExtensions in ListExt.c CVE-2018-14599 — libX11: Off-by-one error in XListExtensions in ListExt.c CVE-2018-14600 — libX11: Out of Bounds write in XListExtensions in ListExt.c CVE-2018-15853 — libxkbcommon: xkbcomp: Endless recursion in xkbcomp/expr.c resulting in a crash CVE-2018-15854 — libxkbcommon: NULL pointer dereference resulting in a crash CVE-2018-15855 — libxkbcommon: NULL pointer dereference when handling xkb_geometry CVE-2018-15856 — libxkbcommon: Infinite loop when reaching EOL unexpectedly resulting in a crash CVE-2018-15857 — libxkbcommon: Invalid free in ExprAppendMultiKeysymList resulting in a crash CVE-2018-15859 — libxkbcommon: xkbcomp: NULL pointer dereference when parsing invalid atoms in ExprResolveLhs resulting in a crash CVE-2018-15861 — libxkbcommon: xkbcomp: NULL pointer dereference in ExprResolveLhs resulting in a crash CVE-2018-15862 — libxkbcommon: NULL pointer dereference in LookupModMask resulting in a crash CVE-2018-15863 — libxkbcommon: xkbcomp: NULL pointer dereference in ResolveStateAndPredicate resulting in a crash CVE-2018-15864 — libxkbcommon: NULL pointer dereference in resolve_keysym resulting in a crash