CVE-2018-12904

Description

From CVE.org

In arch/x86/kvm/vmx.c in the Linux kernel before 4.17.2, when nested virtualization is used, local attackers could cause L1 KVM guests to VMEXIT, potentially allowing privilege escalations and denial of service attacks due to lack of checking of CPL.

Statement

This issue does not affect the versions of the kernel package as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2.

Common Vulnerability Scoring System (CVSS) Score Details

Info alert:Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 Score Breakdown

Red HatNVDcve.org
Base Score7.84.9N/A
Attack VectorLocalLocalN/A
Attack ComplexityHighHighN/A
Privileges RequiredLowNoneN/A
User InteractionNoneNoneN/A
ScopeChangedUnchangedN/A
ConfidentialityHighLowN/A
Integrity ImpactHighLowN/A
Availability ImpactHighLowN/A

Vector

Red Hat: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

NVD: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Understanding the Weakness (CWE)

CWE-284

Other

Technical Impact: Varies by Context

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