CVE-2023-34320

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-34320", "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "state": "PUBLISHED", "assignerShortName": "XEN", "dateReserved": "2023-06-01T10:44:17.064Z", "datePublished": "2023-12-08T20:54:06.993Z", "dateUpdated": "2025-11-04T19:16:33.356Z"}, "containers": {"cna": {"title": "arm: Guests can trigger a deadlock on Cortex-A77", "datePublic": "2023-08-01T14:44:00.000Z", "descriptions": [{"lang": "en", "value": "Cortex-A77 cores (r0p0 and r1p0) are affected by erratum 1508412\nwhere software, under certain circumstances, could deadlock a core\ndue to the execution of either a load to device or non-cacheable memory,\nand either a store exclusive or register read of the Physical\nAddress Register (PAR_EL1) in close proximity.\n"}], "impacts": [{"descriptions": [{"lang": "en", "value": "A (malicious) guest that doesn't include the workaround for erratum\n1508412 could deadlock the core. This will ultimately result to\na deadlock of the system.\n"}]}], "affected": [{"defaultStatus": "unknown", "product": "Xen", "vendor": "Xen", "versions": [{"status": "unknown", "version": "consult Xen advisory XSA-436"}]}], "configurations": [{"lang": "en", "value": "Systems running all version of Xen are affected.\n\nThis bug is specific to Arm Cortex-A77 cores r0p0 and r1p0.\n"}], "workarounds": [{"lang": "en", "value": "There are no known mitigations.\n"}], "references": [{"url": "https://xenbits.xenproject.org/xsa/advisory-436.html"}], "providerMetadata": {"orgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "shortName": "XEN", "dateUpdated": "2023-12-08T20:54:06.993Z"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "https://xenbits.xenproject.org/xsa/advisory-436.html", "tags": ["x_transferred"]}, {"url": "http://xenbits.xen.org/xsa/advisory-436.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-04T19:16:33.356Z"}}]}}

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{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "Xen", "vendor": "Xen", "versions": [{"status": "unknown", "version": "consult Xen advisory XSA-436"}]}], "source": "security@xen.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:arm:cortex-a77_firmware:r0p0:*:*:*:*:*:*:*", "matchCriteriaId": "C311AE89-6CD0-4EAD-BF0E-D96D566B4876", "vulnerable": true}, {"criteria": "cpe:2.3:o:arm:cortex-a77_firmware:r1p0:*:*:*:*:*:*:*", "matchCriteriaId": "3917B78C-B6A4-4B02-BF41-78B0F70A6206", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:arm:cortex-a77:-:*:*:*:*:*:*:*", "matchCriteriaId": "514DE9F5-D826-42AA-B4CF-3EB09F4D3D5D", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*", "matchCriteriaId": "C2B9CCC2-BAC5-4A65-B8D4-4B71EBBA0C2F", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Cortex-A77 cores (r0p0 and r1p0) are affected by erratum 1508412\nwhere software, under certain circumstances, could deadlock a core\ndue to the execution of either a load to device or non-cacheable memory,\nand either a store exclusive or register read of the Physical\nAddress Register (PAR_EL1) in close proximity.\n"}, {"lang": "es", "value": "Los n\u00facleos Cortex-A77 (r0p0 y r1p0) se ven afectados por la errata 1508412 donde el software, bajo ciertas circunstancias, podr\u00eda bloquear un n\u00facleo debido a la ejecuci\u00f3n de una carga en el dispositivo o de una memoria no almacenable en cach\u00e9, y una lectura exclusiva de la tienda o del registro de el Registro de Direcciones F\u00edsicas (PAR_EL1) muy cerca."}], "id": "CVE-2023-34320", "lastModified": "2026-06-17T06:03:22.900", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2023-12-08T21:15:07.353", "references": [{"source": "security@xen.org", "tags": ["Third Party Advisory"], "url": "https://xenbits.xenproject.org/xsa/advisory-436.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://xenbits.xen.org/xsa/advisory-436.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://xenbits.xenproject.org/xsa/advisory-436.html"}], "sourceIdentifier": "security@xen.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-667"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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