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Improper Privilege Management Affecting linux-4.9 package, versions <4.9.110-1~deb8u1

Severity

 Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.06% (32nd percentile)

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  • Snyk IDSNYK-DEBIAN8-LINUX49-263013
  • published27 Jun 2018
  • disclosed11 Sept 2018
Report a new vulnerability Found a mistake?

Introduced: 27 Jun 2018

CVE-2018-10853  (opens in a new tab)
CWE-269  (opens in a new tab)

How to fix?

Upgrade Debian:8 linux-4.9 to version 4.9.110-1~deb8u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-4.9 package and not the linux-4.9 package as distributed by Debian. See How to fix? for Debian:8 relevant fixed versions and status.

A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside guest.

References