CVE-2026-23555

{"id": "CVE-2026-23555", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 4.0, "exploitabilityScore": 2.5}]}, "published": "2026-03-23T07:16:07.330", "references": [{"url": "https://xenbits.xenproject.org/xsa/advisory-481.html", "source": "security@xen.org"}, {"url": "http://www.openwall.com/lists/oss-security/2026/03/17/7", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://xenbits.xen.org/xsa/advisory-481.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-617"}]}], "descriptions": [{"lang": "en", "value": "Any guest issuing a Xenstore command accessing a node using the\n(illegal) node path \"/local/domain/\", will crash xenstored due to a\nclobbered error indicator in xenstored when verifying the node path.\n\nNote that the crash is forced via a failing assert() statement in\nxenstored. In case xenstored is being built with NDEBUG #defined,\nan unprivileged guest trying to access the node path \"/local/domain/\"\nwill result in it no longer being serviced by xenstored, other guests\n(including dom0) will still be serviced, but xenstored will use up\nall cpu time it can get."}], "lastModified": "2026-03-23T15:16:32.237", "sourceIdentifier": "security@xen.org"}