Ghost Security Suite alpha 1.200 does not properly validate certain parameters to System Service Descriptor Table (SSDT) function handlers which allows local users to cause a denial of service (crash) and possibly gain privileges via the (1) NtCreateKey (2) NtCreateThread (3) NtDeleteValueKey (4) NtQueryValueKey (5) NtSetSystemInformation and (6) NtSetValueKey kernel SSDT hooks.