{"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": "2026-10-13T16:11:54.099Z"}, "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"}}]}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "Xen", "vendor": "Xen", "versions": [{"status": "unknown", "version": "consult Xen advisory XSA-520"}]}], "source": "security@xen.org"}], "cveTags": [], "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.)"}], "id": "CVE-2026-102700", "lastModified": "2026-10-13T16:17:09.623", "metrics": {}, "published": "2026-10-13T16:17:09.623", "references": [{"source": "security@xen.org", "url": "https://xenbits.xenproject.org/xsa/advisory-520.html"}], "sourceIdentifier": "security@xen.org", "vulnStatus": "Received"}

{}

{}