Go to homepageCyberStrike

Menu

Star on GitHub · 3.3k
Sign inDownload

CVE-2022-2196

5.8 · MEDIUM

A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks.

Published Jan 9, 2023CWE-1188EPSS 0.29%

Overview

CVE-2022-2196 is a medium-severity vulnerability. It was published on January 9, 2023 and has a CVSS 3.1 base score of 5.8 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.8, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM (L0) advertising eIBRS support to L1. An attacker at L2 with code execution can execute code on an indirect branch on the host machine. We recommend upgrading to Kernel 6.2 or applying the relevant stable backports (v5.4.233, v5.10.170, v5.15.96, v6.1.14).

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1b0cafaae8884726c597caded50af185ffc13349Refgit.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=63fada296062e91ad9f871970d4e7f19e21a6a15Refgit.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=6b539a7dbb49250f92515c2ba60aea239efc9e35Refgit.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f93a1a5bdcdd122aae0a3eab7a52c15b71fb725bRefgit.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2e7eab81425ad6c875f2ed47c0ce01e78afc38a5Refkernel.dance/#2e7eab81425aReflists.debian.org/debian-lts-announce/2023/05/msg00005.htmlRefgit.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2e7eab81425ad6c875f2ed47c0ce01e78afc38a5Refkernel.dance/#2e7eab81425aReflists.debian.org/debian-lts-announce/2023/05/msg00005.html

How CyberStrike helps

Frequently asked questions

What is CVE-2022-2196?

CVE-2022-2196 is a medium-severity vulnerability. It was published on January 9, 2023 and has a CVSS 3.1 base score of 5.8 (MEDIUM).

How severe is CVE-2022-2196?

This vulnerability has a CVSS 3.1 base score of 5.8, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-2196?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-2196?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-2196 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related MEDIUM CVEs from 2022

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999
LiveWatch live →