{"id":"CVE-2026-62429","state":"PUBLISHED","title":"vNUMA domain cleanup may race other operations","description":"Accessing the vNUMA configuration data of a guest is still possible when\ndomain destruction has already started.  The cleaning up of that\nconfiguration information is not synchronized with its retrieval by a\ndevice model controlling the guest.","publishedAt":"2026-07-28T12:32:24.333Z","updatedAt":"2026-07-28T16:33:29.286Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","source":"CISA-ADP"},"assigner":"XEN","products":["Xen Xen"],"affected":[{"vendor":"Xen","product":"Xen","defaultStatus":"unknown","versions":[{"version":"consult Xen advisory XSA-502","status":"unknown"}]}],"references":["https://xenbits.xenproject.org/xsa/advisory-502.html","http://xenbits.xen.org/xsa/advisory-502.html","http://www.openwall.com/lists/oss-security/2026/07/28/18"],"weaknesses":["CWE-362"],"ingestedAt":"2026-10-29T20:12:32.778Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/62xxx/CVE-2026-62429.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-62429","state":"PUBLISHED","datePublished":"2026-07-28T12:32:24.333Z","dateUpdated":"2026-07-28T16:33:29.286Z","assignerShortName":"XEN","assignerOrgId":"23aa2041-22e1-471f-9209-9b7396fa234f","dateReserved":"2026-07-14T10:28:12.655Z"},"containers":{"cna":{"title":"vNUMA domain cleanup may race other operations","descriptions":[{"lang":"en","value":"Accessing the vNUMA configuration data of a guest is still possible when\ndomain destruction has already started.  The cleaning up of that\nconfiguration information is not synchronized with its retrieval by a\ndevice model controlling the guest."}],"affected":[{"vendor":"Xen","product":"Xen","defaultStatus":"unknown","versions":[{"version":"consult Xen advisory XSA-502","status":"unknown"}]}],"references":[{"url":"https://xenbits.xenproject.org/xsa/advisory-502.html"}],"providerMetadata":{"shortName":"XEN","orgId":"23aa2041-22e1-471f-9209-9b7396fa234f","dateUpdated":"2026-07-28T12:32:24.333Z"},"datePublic":"2026-07-28T12:00:00.000Z","impacts":[{"descriptions":[{"lang":"en","value":"While Denial of Service (DoS) affecting the entire host and information\nleaks and are the prevailing effect, a device model stub domain or a\nde-privileged device model running in the control domain may also be\nable to elevate its privileges to that of the host."}]}],"configurations":[{"lang":"en","value":"All Xen versions from 4.5 onwards are vulnerable.  Xen versions 4.4 and\nearlier are not vulnerable.\n\nOnly entities controlling guests (on x86: HVM guests) can leverage the\nvulnerability.  These are device models running in either a stub domain or\nde-privileged in Dom0.\n\nOnly guests which have vNUMA enabled allow their controlling entities to\nleverage the vulnerability."}],"workarounds":[{"lang":"en","value":"On x86, running only PV or PVH guests will avoid the vulnerability.\n\nNot enabling vNUMA for HVM guests will also avoid the vulnerability."}],"credits":[{"lang":"en","type":"finder","value":"This issue was discovered by Teddy Astie of Vates."}]},"adp":[{"title":"CVE Program Container","references":[{"url":"http://xenbits.xen.org/xsa/advisory-502.html"},{"url":"http://www.openwall.com/lists/oss-security/2026/07/28/18"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-07-28T16:33:29.286Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":6.5,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"LOW","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-07-28T14:56:13.716116Z","id":"CVE-2026-62429","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-362","type":"CWE","lang":"en","description":"CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-28T15:51:45.362Z"}}]}}}