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prionPRIOn knowledge basePRION:CVE-2017-7518
HistoryJul 30, 2018 - 3:29 p.m.

Design/Logic Flaw

2018-07-3015:29:00
PRIOn knowledge base
www.prio-n.com
11

7.2 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

26.7%

A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this.