diff --git a/ntoskrnl/ex/handle.c b/ntoskrnl/ex/handle.c
index b9732f3639df7..ab6905983f32c 100644
--- a/ntoskrnl/ex/handle.c
+++ b/ntoskrnl/ex/handle.c
@@ -68,12 +68,20 @@ ExpLookupHandleTableEntry(IN PHANDLE_TABLE HandleTable,
             /* Get the mid level pointer array */
             PointerArray = PointerArray[Handle.HighIndex];
 
+            /* TODO: maybe ASSERT? */
+			if (PointerArray == NULL)
+				return NULL;
+
             /* Fall through */
         case 1:
 
             /* Get the handle array */
             HandleArray = PointerArray[Handle.MidIndex];
 
+            /* TODO: maybe ASSERT? */
+			if (HandleArray == NULL)
+				return NULL;
+
             /* Fall through */
         case 0:
 
@@ -708,6 +716,13 @@ ExpAllocateHandleTableEntry(IN PHANDLE_TABLE HandleTable,
         /* Lookup the entry for this handle */
         Entry = ExpLookupHandleTableEntry(HandleTable, Handle);
 
+        /* TODO: maybe ASSERT? */
+		if (Entry == NULL)
+		{
+			NewHandle->GenericHandleOverlay = NULL;
+			return NULL;
+		}
+
         /* Get an available lock and acquire it */
         i = ((OldValue & FREE_HANDLE_MASK) >> 2) % 4;
         KeEnterCriticalRegion();
diff --git a/ntoskrnl/ex/work.c b/ntoskrnl/ex/work.c
index a5cfe71909dfe..04294ad7a3a2a 100644
--- a/ntoskrnl/ex/work.c
+++ b/ntoskrnl/ex/work.c
@@ -305,6 +305,9 @@ ExpCreateWorkerThread(WORK_QUEUE_TYPE WorkQueueType,
                               (PVOID*)&Thread,
                               NULL);
 
+    if (Thread == NULL) 
+        return;
+
     /* Set the Priority */
     KeSetBasePriorityThread(&Thread->Tcb, Priority);