Great article re: now-merged Linux kernel changes that address x86 page table isolation issues: http://pythonsweetness.tumblr.com/post/169166980422/the-mysterious-case-of-the-linux-page-table. Prevailing theory: Fast fix to mitigate hypervisor privilege escalation. Plot twist: Not a Linux kernel vuln, but a CPU/arch bug (X86_BUG_CPU

Keith

@kwm

Great article re: now-merged Linux kernel changes that address x86 page table isolation issues: http://pythonsweetness.tumblr.com/post/169166980422/the-mysterious-case-of-the-linux-page-table.

Prevailing theory: Fast fix to mitigate hypervisor privilege escalation.

Plot twist: Not a Linux kernel vuln, but a CPU/arch bug (X86_BUG_CPU_INSECURE)?

1/1/2018, 12:27:42 PM

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