Design/Logic Flaw

2018-07-2617:29:00

PRIOn knowledge base

www.prio-n.com

7.5 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

26.9%

JSON

A flaw was found in Linux kernel’s KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host’s userspace code has an ability to place malicious entries in the GDT, particularly to the per-cpu variables. An attacker can use this to escalate their privileges.

CPENameOperatorVersion
linux_kernellt2.6.36
enterprise_linux_desktopeq6.0
enterprise_linux_servereq6.0
enterprise_linux_server_auseq6.6
enterprise_linux_server_auseq6.5
enterprise_linux_server_auseq6.4
enterprise_linux_workstationeq6.0

Name	Operator	Version
linux_kernel	lt	2.6.36
enterprise_linux_desktop	eq	6.0
enterprise_linux_server	eq	6.0
enterprise_linux_server_aus	eq	6.6
enterprise_linux_server_aus	eq	6.5
enterprise_linux_server_aus	eq	6.4
enterprise_linux_workstation	eq	6.0