{"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"}}]}}