{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-102700", "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "state": "PUBLISHED", "assignerShortName": "XEN", "dateReserved": "2026-09-29T16:11:40.973Z", "datePublished": "2026-10-13T15:45:27.794Z", "dateUpdated": "2026-10-20T17:16:15.958Z"}, "containers": {"cna": {"title": "gnttab: cache-flush handling may cause page reference leak", "datePublic": "2026-10-13T12:00:00.000Z", "descriptions": [{"lang": "en", "value": "With its original introduction, GNTTAB_cache_flush was made available\nuniformly. XSA-232 (CVE-2017-14318) then covered an omitted NULL\npointer check, yet the addition of that check failed to adjust the\nsubsequent error path. That error path fails to drop a page reference in\ncase the specified page is owned by a special system domain (DOM_IO and\nDOM_COW are system domains which can have memory pages assigned to them.)"}], "impacts": [{"descriptions": [{"lang": "en", "value": "The most likely outcome is Denial of Service (DoS) of either Domain 0\n(then likely affecting the entire host) or of another domain."}]}], "affected": [{"defaultStatus": "unknown", "product": "Xen", "vendor": "Xen", "versions": [{"status": "unknown", "version": "consult Xen advisory XSA-520"}]}], "configurations": [{"lang": "en", "value": "Xen versions 4.5 through 4.20 are affected. Xen versions 4.21 and\nnewer as well as 4.4 and older are not affected.\n\nOnly x86 systems are vulnerable. Arm systems are not vulnerable."}], "workarounds": [{"lang": "en", "value": "There is no known mitigation."}], "credits": [{"lang": "en", "type": "finder", "value": "This issue was discovered independently by Andrew Cooper of Citrix and\nYehyeong Lee."}], "references": [{"url": "https://xenbits.xenproject.org/xsa/advisory-520.html"}], "providerMetadata": {"orgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "shortName": "XEN", "dateUpdated": "2026-10-13T15:45:27.794Z"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://xenbits.xen.org/xsa/advisory-520.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-10-13T16:11:54.099Z"}}, {"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-404", "lang": "en", "description": "CWE-404 Improper Resource Shutdown or Release"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.7, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-10-20T17:15:12.175287Z", "id": "CVE-2026-102700", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-20T17:16:15.958Z"}}]}}

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