xkbcommon null pointer dereference vulnerability (CNVD-2019-02669)

xkbcommon is a keyboard key mapping compiler and support library. A null pointer dereference vulnerability exists in the 'ResolveStateAndPredicate' function of the xkbcomp/compat.c file in versions of xkbcommon prior to xkbcommon 0.8.2, which can be exploited by a local attacker to cause the...