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CVE-2022-33748

5.6 · MEDIUM

lock order inversion in transitive grant copy handling As part of XSA-226 a missing cleanup call was inserted on an error handling path.

Published Oct 11, 2022CWE-755EPSS 0.27%

Overview

CVE-2022-33748 is a medium-severity vulnerability. It was published on October 11, 2022 and has a CVSS 3.1 base score of 5.6 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.6, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

lock order inversion in transitive grant copy handling As part of XSA-226 a missing cleanup call was inserted on an error handling path. While doing so, locking requirements were not paid attention to. As a result two cooperating guests granting each other transitive grants can cause locks to be acquired nested within one another, but in respectively opposite order. With suitable timing between the involved grant copy operations this may result in the locking up of a CPU.

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

Refwww.openwall.com/lists/oss-security/2022/10/11/2Refxenbits.xen.org/xsa/advisory-411.htmlReflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TJOMUNGW6VTK5CZZRLWLVVEOUPEQBRHI/Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWSC77GS5NATI3TT7FMVPULUPXR635XQ/Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/Refsecurity.gentoo.org/glsa/202402-07Refwww.debian.org/security/2022/dsa-5272Refxenbits.xenproject.org/xsa/advisory-411.txtRefwww.openwall.com/lists/oss-security/2022/10/11/2Refxenbits.xen.org/xsa/advisory-411.html

How CyberStrike helps

Frequently asked questions

What is CVE-2022-33748?

CVE-2022-33748 is a medium-severity vulnerability. It was published on October 11, 2022 and has a CVSS 3.1 base score of 5.6 (MEDIUM).

How severe is CVE-2022-33748?

This vulnerability has a CVSS 3.1 base score of 5.6, 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-2022-33748?

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-2022-33748?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-33748 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.

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