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Execution with Unnecessary Privileges Affecting kernel-rt-debug package, versions <0:3.10.0-514.26.1.rt56.442.el7

Severity

 Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.18% (57th percentile)

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  • Snyk IDSNYK-CENTOS7-KERNELRTDEBUG-2081010
  • published26 Jul 2021
  • disclosed12 Jan 2017
Report a new vulnerability Found a mistake?

Introduced: 12 Jan 2017

CVE-2017-2583  (opens in a new tab)
CWE-250  (opens in a new tab)

How to fix?

Upgrade Centos:7 kernel-rt-debug to version 0:3.10.0-514.26.1.rt56.442.el7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug package and not the kernel-rt-debug package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

The load_segment_descriptor implementation in arch/x86/kvm/emulate.c in the Linux kernel before 4.9.5 improperly emulates a "MOV SS, NULL selector" instruction, which allows guest OS users to cause a denial of service (guest OS crash) or gain guest OS privileges via a crafted application.