title: Red Hat Security Advisory: Xorg security and bug fix update
description: libX11: Crash on invalid reply in XListExtensions in ListExt.c libX11: Off-by-one error in XListExtensions in ListExt.c libX11: Out of Bounds write in XListExtensions in ListExt.c libxkbcommon: Endless recursion in xkbcomp/expr.c resulting in a crash libxkbcommon: NULL pointer dereference resulting in a crash libxkbcommon: NULL pointer dereference when handling xkb_geometry libxkbcommon: Infinite loop when reaching EOL unexpectedly resulting in a crash libxkbcommon: Invalid free in ExprAppendMultiKeysymList resulting in a crash libxkbcommon: NULL pointer dereference when parsing invalid atoms in ExprResolveLhs resulting in a crash libxkbcommon: NULL pointer dereference in ExprResolveLhs resulting in a crash libxkbcommon: NULL pointer dereference in LookupModMask resulting in a crash libxkbcommon: NULL pointer dereference in ResolveStateAndPredicate resulting in a crash libxkbcommon: NULL pointer dereference in resolve_keysym resulting in a crash
cpes: cpe:/o:redhat:enterprise_linux:7::client cpe:/o:redhat:enterprise_linux:7::computenode cpe:/o:redhat:enterprise_linux:7::server cpe:/o:redhat:enterprise_linux:7::workstation