It seem to be very specific for an OS and maybe even kernel version, how much generic it could be? There aren't kernel security modules that could detect if som

It seem to be very specific for an OS and maybe even kernel version, how much generic it could be? There aren't kernel security modules that could detect if something had been overwritten? The paper was written in 2010, maybe was something done in the kernel development to be able to check for that. What about detection of that kind of backdoors is being present in your current hardware? It is possible if a backdoor is running? Or, i.e. loading some not very used OS for that kind of validation (i.e. some of the BSDs or a kernel with modules disabled) that could avoid to run the backdoor and being able to do that detection.