{"api_version":"1","generated_at":"2026-04-22T23:53:39+00:00","cve":"CVE-2022-33747","urls":{"html":"https://cve.report/CVE-2022-33747","api":"https://cve.report/api/cve/CVE-2022-33747.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2022-33747","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-33747"},"summary":{"title":"CVE-2022-33747","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. 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NB however that memory exhaustion by itself shouldn’t cause\neither Xen or properly-written guests to crash."}]}}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"unknown"}]}]},"references":{"reference_data":[{"url":"https://xenbits.xenproject.org/xsa/advisory-409.txt","refsource":"MISC","name":"https://xenbits.xenproject.org/xsa/advisory-409.txt"},{"refsource":"CONFIRM","name":"http://xenbits.xen.org/xsa/advisory-409.html","url":"http://xenbits.xen.org/xsa/advisory-409.html"},{"refsource":"MLIST","name":"[oss-security] 20221011 Xen Security Advisory 409 v3 (CVE-2022-33747) - Arm: unbounded memory consumption for 2nd-level page tables","url":"http://www.openwall.com/lists/oss-security/2022/10/11/5"},{"refsource":"FEDORA","name":"FEDORA-2022-5b594b82ac","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XWSC77GS5NATI3TT7FMVPULUPXR635XQ/"},{"refsource":"DEBIAN","name":"DSA-5272","url":"https://www.debian.org/security/2022/dsa-5272"},{"refsource":"FEDORA","name":"FEDORA-2022-d80cc73088","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TJOMUNGW6VTK5CZZRLWLVVEOUPEQBRHI/"},{"refsource":"FEDORA","name":"FEDORA-2022-99af00f60e","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/"}]},"workaround":{"workaround_data":{"description":{"description_data":[{"lang":"eng","value":"There is no known mitigation."}]}}}},"nvd":{"publishedDate":"2022-10-11 13:15:00","lastModifiedDate":"2024-02-04 08:15:00","problem_types":["CWE-404"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW","baseScore":3.8,"baseSeverity":"LOW"},"exploitabilityScore":2,"impactScore":1.4}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:xen:xen:*:*:*:*:*:*:arm:*","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}