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NULL Pointer Dereference Affecting kernel-rt-debug-kvm package, versions <0:3.10.0-514.10.2.rt56.435.el7

Severity

 Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-CENTOS7-KERNELRTDEBUGKVM-2077512
  • published26 Jul 2021
  • disclosed2 Nov 2016
Report a new vulnerability Found a mistake?

Introduced: 2 Nov 2016

CVE-2016-8630  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Centos:7 kernel-rt-debug-kvm to version 0:3.10.0-514.10.2.rt56.435.el7 or higher.

NVD Description

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

The x86_decode_insn function in arch/x86/kvm/emulate.c in the Linux kernel before 4.8.7, when KVM is enabled, allows local users to cause a denial of service (host OS crash) via a certain use of a ModR/M byte in an undefined instruction.