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CVE-2022-26357

7.0 · HIGH

race in VT-d domain ID cleanup Xen domain IDs are up to 15 bits wide.

Published Apr 5, 2022CWE-362EPSS 0.26%

Overview

CVE-2022-26357 is a high-severity vulnerability. It was published on April 5, 2022 and has a CVSS 3.1 base score of 7.0 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

race in VT-d domain ID cleanup Xen domain IDs are up to 15 bits wide. VT-d hardware may allow for only less than 15 bits to hold a domain ID associating a physical device with a particular domain. Therefore internally Xen domain IDs are mapped to the smaller value range. The cleaning up of the housekeeping structures has a race, allowing for VT-d domain IDs to be leaked and flushes to be bypassed.

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/2022/04/05/2Refxenbits.xen.org/xsa/advisory-399.htmlReflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD/Refsecurity.gentoo.org/glsa/202402-07Refwww.debian.org/security/2022/dsa-5117Refxenbits.xenproject.org/xsa/advisory-399.txtRefwww.openwall.com/lists/oss-security/2022/04/05/2Refxenbits.xen.org/xsa/advisory-399.htmlReflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/

How CyberStrike helps

Frequently asked questions

What is CVE-2022-26357?

CVE-2022-26357 is a high-severity vulnerability. It was published on April 5, 2022 and has a CVSS 3.1 base score of 7.0 (HIGH).

How severe is CVE-2022-26357?

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-26357?

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-2022-26357?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-26357 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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