FKIE_CVE-2021-26400

Vulnerability from fkie_nvd - Published: 2022-05-11 17:15 - Updated: 2024-11-21 05:56
Summary
AMD processors may speculatively re-order load instructions which can result in stale data being observed when multiple processors are operating on shared memory, resulting in potential data leakage.
Impacted products
Vendor Product Version
amd cpu -

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              "criteria": "cpe:2.3:h:amd:cpu:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "8CA12CA3-1320-4AF1-8F1A-22F97BB66027",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "AMD processors may speculatively re-order load instructions which can result in stale data being observed when multiple processors are operating on shared memory, resulting in potential data leakage."
    },
    {
      "lang": "es",
      "value": "Los procesadores AMD pueden reordenar especulativamente las instrucciones de carga, lo que puede resultar en que sean observados datos obsoletos cuando varios procesadores operan en la memoria compartida, resultando en un posible filtrado de datos"
    }
  ],
  "id": "CVE-2021-26400",
  "lastModified": "2024-11-21T05:56:18.113",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 2.1,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
          "version": "2.0"
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        "exploitabilityScore": 3.9,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
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          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
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  "published": "2022-05-11T17:15:08.787",
  "references": [
    {
      "source": "psirt@amd.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1035"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1035"
    }
  ],
  "sourceIdentifier": "psirt@amd.com",
  "vulnStatus": "Modified",
  "weaknesses": [
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          "value": "NVD-CWE-noinfo"
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      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Sightings

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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.
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  • 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.


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