NULL Pointer Dereference in LookupModMask in xkbcommon

CVE-2018-15862 · LOW Severity

AV:L/AC:L/AU:N/C:N/I:N/A:P

Unchecked NULL pointer usage in LookupModMask in xkbcomp/expr.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 invalid virtual modifiers.

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