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Vulnerability record · CVE-2023-34320 · published 8 December 2023

CVE-2023-34320: Arm cortex-a77 firmware vulnerability

Arm · Cortex A77 Firmware

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 proximity.

5.5 CVSS 3.1 Medium EPSS 0.24% · top 86.8% CWE-667 · CWE-667
5.5CVSS 3.1 base score
0.24%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

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 proximity.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://xenbits.xenproject.org/xsa/advisory-436.html Third Party Advisory
http://xenbits.xen.org/xsa/advisory-436.html
https://xenbits.xenproject.org/xsa/advisory-436.html Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-34320), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.