The Bitter Sweet Truth ..... and there aint no doubt about it.
A person going by the name of Stun, who made the source code available, wrote: "It is the VMKernel from between 1998 and 2004, but as we all know, kernels don't change that much in programs, they get extended or adapted but some core functionality still stays the same."
Others would make so bold as to to say that most core functionality still stays the same, and that makes a virtual machine kernel leak practically impossible to plug.
Oh dear, what a shame. I wonder who is to blame? Although who really cares, for it doesn't really matter, does it.