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CVE-2022-33747

UNKNOWN
Published 2022-10-11T00:00:00
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No CVSS data available

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Xen

xen

Affected Versions:

consult Xen advisory XSA-409

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed LOW

GHSA-wp5g-757j-v342

Advisory Details

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.

CVSS Scoring

CVSS Score

2.5

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2022-33747
WEB https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TJOMUNGW6VTK5CZZRLWLVVEOUPEQBRHI
WEB https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWSC77GS5NATI3TT7FMVPULUPXR635XQ
WEB https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/TJOMUNGW6VTK5CZZRLWLVVEOUPEQBRHI
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/XWSC77GS5NATI3TT7FMVPULUPXR635XQ
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE
WEB https://security.gentoo.org/glsa/202402-07
WEB https://www.debian.org/security/2022/dsa-5272
WEB https://xenbits.xenproject.org/xsa/advisory-409.txt
WEB http://www.openwall.com/lists/oss-security/2022/10/11/5
WEB http://xenbits.xen.org/xsa/advisory-409.html

Advisory provided by GitHub Security Advisory Database. Published: October 11, 2022, Modified: October 14, 2022

References

https://xenbits.xenproject.org/xsa/advisory-409.txt
http://xenbits.xen.org/xsa/advisory-409.html
http://www.openwall.com/lists/oss-security/2022/10/11/5
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWSC77GS5NATI3TT7FMVPULUPXR635XQ/
https://www.debian.org/security/2022/dsa-5272
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TJOMUNGW6VTK5CZZRLWLVVEOUPEQBRHI/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/
https://security.gentoo.org/glsa/202402-07
Published: 2022-10-11T00:00:00
Last Modified: 2024-08-03T08:09:22.675Z
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