{"id":"CVE-2023-34320","state":"PUBLISHED","title":"arm: Guests can trigger a deadlock on Cortex-A77","description":"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","publishedAt":"2023-12-08T20:54:06.993Z","updatedAt":"2025-11-04T19:16:33.356Z","severity":null,"assigner":"XEN","products":["Xen Xen"],"affected":[{"vendor":"Xen","product":"Xen","defaultStatus":"unknown","versions":[{"version":"consult Xen advisory XSA-436","status":"unknown"}]}],"references":["https://xenbits.xenproject.org/xsa/advisory-436.html","http://xenbits.xen.org/xsa/advisory-436.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:00.499Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/34xxx/CVE-2023-34320.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-34320","state":"PUBLISHED","datePublished":"2023-12-08T20:54:06.993Z","dateUpdated":"2025-11-04T19:16:33.356Z","assignerShortName":"XEN","assignerOrgId":"23aa2041-22e1-471f-9209-9b7396fa234f","dateReserved":"2023-06-01T10:44:17.064Z"},"containers":{"cna":{"title":"arm: Guests can trigger a deadlock on Cortex-A77","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"}],"affected":[{"vendor":"Xen","product":"Xen","defaultStatus":"unknown","versions":[{"version":"consult Xen advisory XSA-436","status":"unknown"}]}],"references":[{"url":"https://xenbits.xenproject.org/xsa/advisory-436.html"}],"providerMetadata":{"shortName":"XEN","orgId":"23aa2041-22e1-471f-9209-9b7396fa234f","dateUpdated":"2023-12-08T20:54:06.993Z"},"datePublic":"2023-08-01T14:44:00.000Z","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"}]}],"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"}]},"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":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-11-04T19:16:33.356Z"}}]}}}