{"api_version":"1","generated_at":"2026-04-22T23:52:40+00:00","cve":"CVE-2021-28700","urls":{"html":"https://cve.report/CVE-2021-28700","api":"https://cve.report/api/cve/CVE-2021-28700.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-28700","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-28700"},"summary":{"title":"CVE-2021-28700","description":"xen/arm: No memory limit for dom0less domUs The dom0less feature allows an administrator to create multiple unprivileged domains directly from Xen. Unfortunately, the memory limit from them is not set. 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Only domains created using the\ndom0less feature are affected.\n\nOnly domains created using the dom0less feature can leverage the\nvulnerability.\n\nAll versions of Xen since 4.12 are vulnerable."}]}}},"credit":{"credit_data":{"description":{"description_data":[{"lang":"eng","value":"This issue was discovered by Julien Grall of Amazon."}]}}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"xen/arm: No memory limit for dom0less domUs The dom0less feature allows an administrator to create multiple unprivileged domains directly from Xen. Unfortunately, the memory limit from them is not set. 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Unfortunately, the memory limit from them is not set. This allow a domain to allocate memory beyond what an administrator originally configured.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"28700","Ordinal":"2","NoteData":"2021-08-27","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"28700","Ordinal":"3","NoteData":"2021-09-24","Type":"Other","Title":"Modified"}]}}}