It is far from being a "critical flaw". In the article they say that when running kernel code you can bypass any antivirus. Surprise. Did we missed the point that you first need to gain kernel level privileges?

The real problem behind the AV industry is that almost all Windows users tend to use a user with Administrator level privileges and when they gets infected the malware runs with full administrator privileges. If they would use a normal account and not the Windows environment's "root" equivalent we would not talk about this "critical problem" as the malware would need to infect and scalate privileges in order to install a kernel level componente, a rootkit.

As previously said, it is far from being a "critical flaw".

When an high percent of they (US citizens) thinks that spain is in Mexico and almost all the american history previous to the european colonization doesn't exists.