Updated xkbcomp packages fix security vulnerabilities

Endless recursion in xkbcomp/expr.c resulting in a crash. CVE-2018-15853 NULL pointer dereference when parsing invalid atoms in ExprResolveLhs resulting in a crash. CVE-2018-15859 NULL pointer dereference in ExprResolveLhs resulting in a crash. CVE-2018-15861 NULL pointer dereference in...

DEBIAN-CVE-2018-15863

Unchecked NULL pointer usage in ResolveStateAndPredicate in xkbcomp/compat.c in xkbcommon before 0.8.2 could be used by local attackers to crash NULL pointer dereference the xkbcommon parser by supplying a crafted keymap file with a no-op modmask expression...