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/The Linux Virtual Memory System: Other Security Problems
The Linux Virtual Memory System: Other Security Problems
Learn how Linux improves its defense system by kernel page-table isolation to protect itself from recent emerging attacks.
We'll cover the following...
As we write these words (August, 2018), the world of systems security has been turned upside down by two new and related attacks. The first is called Meltdown, and the second Spectre. They were discovered at about the same time by four different groups of researchers/engineers, and have led to deep questioning of the fundamental protections offered by computer hardware and the OS above. See meltdownattack.com and spectreattack.com for papers describing each attack in detail. Spectre is considered the more problematic of the two.
Speculative execution
The general ...