CVE-2023-34320 (GCVE-0-2023-34320)

Vulnerability from cvelistv5 – Published: 2023-12-08 20:54 – Updated: 2025-11-04 19:16
VLAI
Title
arm: Guests can trigger a deadlock on Cortex-A77
Summary
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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
XEN CNA under the mitre root
CNA scorecard D 56/100 over 46 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Xen Xen Unknown: consult Xen advisory XSA-436
guessed Create a notification for this product.
Date Public
2023-08-01 14:44
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T19:16:33.356Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://xenbits.xenproject.org/xsa/advisory-436.html"
          },
          {
            "url": "http://xenbits.xen.org/xsa/advisory-436.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "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"
        }
      ],
      "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\u0027t include the workaround for erratum\n1508412 could deadlock the core.  This will ultimately result to\na deadlock of the system.\n"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-12-08T20:54:06.993Z",
        "orgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
        "shortName": "XEN"
      },
      "references": [
        {
          "url": "https://xenbits.xenproject.org/xsa/advisory-436.html"
        }
      ],
      "title": "arm: Guests can trigger a deadlock on Cortex-A77",
      "workarounds": [
        {
          "lang": "en",
          "value": "There are no known mitigations.\n"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
    "assignerShortName": "XEN",
    "cveId": "CVE-2023-34320",
    "datePublished": "2023-12-08T20:54:06.993Z",
    "dateReserved": "2023-06-01T10:44:17.064Z",
    "dateUpdated": "2025-11-04T19:16:33.356Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-34320",
      "date": "2026-10-13",
      "epss": "0.00237",
      "percentile": "0.13572"
    },
    "nvd": {
      "cve": {
        "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"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2025-11-21T10:17:37+00:00",
      "cve": "CVE-2023-34320",
      "id": "CVE-2023-34320",
      "initial_release_date": "2023-08-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "arm: Guests can trigger a deadlock on Cortex-A77",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-34320.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.