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

Severity

 Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.03% (7th percentile)

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  • Snyk IDSNYK-RHEL7-KERNELRTDEBUGDEVEL-4680507
  • 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 RHEL:7 kernel-rt-debug-devel to version 0:3.10.0-514.10.2.rt56.435.el7 or higher.
This issue was patched in RHSA-2017:0387.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-devel package and not the kernel-rt-debug-devel package as distributed by RHEL. See How to fix? for RHEL: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.