{"id":"CVE-2023-34320","aliases":["ALPINE-CVE-2023-34320","DEBIAN-CVE-2023-34320","EUVD-2023-38401","GHSA-75hw-9685-7hff","UBUNTU-CVE-2023-34320"],"status":"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 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Party Advisory","advisory"]},{"url":"http://xenbits.xen.org/xsa/advisory-436.html","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-34320"},{"url":"https://github.com/advisories/GHSA-75hw-9685-7hff"},{"url":"https://security.alpinelinux.org/vuln/CVE-2023-34320","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-34320","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-34320","tags":["report"]},{"url":"https://www.openwall.com/lists/oss-security/2023/08/01/1","tags":["report"]},{"url":"https://xenbits.xen.org/xsa/advisory-436.html","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-34320","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2023-34320","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","status":"published","published":"2023-12-08T20:54:06.993Z","modified":"2025-11-04T19:16:33.356Z","updated_at":"2026-11-02T14:35:35.912488Z"}],"euvd":[{"id":"EUVD-2023-38401","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","status":"published","published":"2023-12-08T20:54:06Z","modified":"2025-11-04T19:16:33Z","updated_at":"2026-11-02T19:49:22.434386Z"}],"ghsa":[{"id":"GHSA-75hw-9685-7hff","title":"Cortex-A77 cores (r0p0 and r1p0) are affected by erratum 1508412\nwhere software, under certain...","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.","status":"published","published":"2023-12-08T21:30:31Z","modified":"2025-11-04T21:30:50Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-667"],"updated_at":"2026-11-02T15:04:36.009389Z"}],"nvd":[{"id":"CVE-2023-34320","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","status":"published","published":"2023-12-08T21:15:07.353Z","modified":"2026-06-17T06:03:22.9Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"}],"cwes":["CWE-667"],"updated_at":"2026-11-02T14:08:54.010507Z"}],"osv":[{"id":"ALPINE-CVE-2023-34320","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","status":"published","published":"2023-12-08T21:15:07.353Z","modified":"2026-10-26T17:17:58.625720014Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:27:49.709457Z"},{"id":"CVE-2023-34320","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","status":"published","published":"2023-12-08T21:15:07.353Z","modified":"2026-03-15T22:46:57.069699Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:32.116263Z"},{"id":"DEBIAN-CVE-2023-34320","description":"Cortex-A77 cores (r0p0 and r1p0) are affected by erratum 1508412 where software, under certain circumstances, could deadlock a core due to the execution of either a load to device or non-cacheable memory, and either a store exclusive or register read of the Physical Address Register (PAR_EL1) in close 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