Lucene search

K
prionPRIOn knowledge basePRION:CVE-2018-1087
HistoryMay 15, 2018 - 4:29 p.m.

Design/Logic Flaw

2018-05-1516:29:00
PRIOn knowledge base
www.prio-n.com
10

AI Score

7.3

Confidence

High

EPSS

0.001

Percentile

28.1%

kernel KVM before versions kernel 4.16, kernel 4.16-rc7, kernel 4.17-rc1, kernel 4.17-rc2 and kernel 4.17-rc3 is vulnerable to a flaw in the way the Linux kernel’s KVM hypervisor handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, the processor did not deliver interrupts and exceptions, rather they are delivered once the first instruction after the stack switch is executed. An unprivileged KVM guest user could use this flaw to crash the guest or, potentially, escalate their privileges in the guest.