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CVE-2022-33747

3.8 · LOW

Arm: unbounded memory consumption for 2nd-level page tables Certain actions require e.g.

Published Oct 11, 2022CWE-404EPSS 0.29%

Overview

CVE-2022-33747 is a low-severity vulnerability. It was published on October 11, 2022 and has a CVSS 3.1 base score of 3.8 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.8, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

Arm: unbounded memory consumption for 2nd-level page tables Certain actions require e.g. removing pages from a guest's P2M (Physical-to-Machine) mapping. When large pages are in use to map guest pages in the 2nd-stage page tables, such a removal operation may incur a memory allocation (to replace a large mapping with individual smaller ones). These memory allocations are taken from the global memory pool. A malicious guest might be able to cause the global memory pool to be exhausted by manipulating its own P2M mappings.

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/2022/10/11/5Refxenbits.xen.org/xsa/advisory-409.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-409.txtRefwww.openwall.com/lists/oss-security/2022/10/11/5Refxenbits.xen.org/xsa/advisory-409.html

How CyberStrike helps

Frequently asked questions

What is CVE-2022-33747?

CVE-2022-33747 is a low-severity vulnerability. It was published on October 11, 2022 and has a CVSS 3.1 base score of 3.8 (LOW).

How severe is CVE-2022-33747?

This vulnerability has a CVSS 3.1 base score of 3.8, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-33747?

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-2022-33747?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-33747 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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