--- xnu/xnu-8020.121.3/libkern/c++/OSSerialize.cpp
+++ xnu/xnu-8019.41.5/libkern/c++/OSSerialize.cpp
@@ -213,12 +213,12 @@
 	// allocate from the kernel map so that we can safely map this data
 	// into user space (the primary use of the OSSerialize object)
 
-	kern_return_t rc = kmem_alloc(kernel_map, (vm_offset_t *)&data,
-	    capacity, (kma_flags_t)(KMA_DATA | KMA_ZERO),
-	    IOMemoryTag(kernel_map));
+	kern_return_t rc = kmem_alloc(kernel_map, (vm_offset_t *)&data, capacity, IOMemoryTag(kernel_map));
 	if (rc) {
 		return false;
 	}
+	bzero((void *)data, capacity);
+
 
 	OSCONTAINER_ACCUMSIZE(capacity);