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.
CVE-2022-33747
Score 3.8 from GitHub Security Advisory (severity: LOW) published 2022-10-11. NVD baseline CVSS 3.8; sources differ by 0.0.
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 3.8
- EG Score
- 3.8(medium)
- EG Risk
- 22(Track)EG Risk 22/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity38% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 19.0%
- KEV
- Not listed
Published
October 11, 2022
Last Modified
November 21, 2024
References (16)
- security@xenhttp://www.openwall.com/lists/oss-security/2022/10/11/5
- security@xenhttp://xenbits.xen.org/xsa/advisory-409.html
- security@xenhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TJOMUNGW6VTK5CZZRLWLVVEOUPEQBRHI/
- security@xenhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWSC77GS5NATI3TT7FMVPULUPXR635XQ/
- security@xenhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/
- security@xenhttps://security.gentoo.org/glsa/202402-07
- security@xenhttps://www.debian.org/security/2022/dsa-5272
- security@xenhttps://xenbits.xenproject.org/xsa/advisory-409.txt
- af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2022/10/11/5
- af854a3a-2127-422b-91ae-364da2661108http://xenbits.xen.org/xsa/advisory-409.html
- af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TJOMUNGW6VTK5CZZRLWLVVEOUPEQBRHI/
- af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWSC77GS5NATI3TT7FMVPULUPXR635XQ/
- af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/
- af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202402-07
- af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2022/dsa-5272
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 14× in last 7d / 51× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 110 total refreshes for this CVE.
- 2026-07-23 02:11 UTCEG score recompute
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Related CVEs(same CWE)
Same CWE
10 shownCWE-400
Frequently asked(5)
What is CVE-2022-33747?
When was CVE-2022-33747 disclosed?
Is CVE-2022-33747 actively exploited?
What is the CVSS score of CVE-2022-33747?
How do I remediate CVE-2022-33747?
Dependency Blast Radius
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