fkie_cve-2021-47348
Vulnerability from fkie_nvd
Published
2024-05-21 15:15
Modified
2025-04-02 14:30
Severity ?
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Avoid HDCP over-read and corruption Instead of reading the desired 5 bytes of the actual target field, the code was reading 8. This could result in a corrupted value if the trailing 3 bytes were non-zero, so instead use an appropriately sized and zero-initialized bounce buffer, and read only 5 bytes before casting to u64.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/06888d571b513cbfc0b41949948def6cb81021b2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3b2b93a485fb7a970bc8b5daef16f4cf579d172fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/44c7c901cb368a9f2493748f213b247b5872639fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c5b518f4b98dbb2bc31b6a55e6aaa1e0e2948f2ePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/06888d571b513cbfc0b41949948def6cb81021b2Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/3b2b93a485fb7a970bc8b5daef16f4cf579d172fPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/44c7c901cb368a9f2493748f213b247b5872639fPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c5b518f4b98dbb2bc31b6a55e6aaa1e0e2948f2ePatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C79CF5C2-DB53-4AFE-BC5F-8320297112A1",
              "versionEndExcluding": "5.10.51",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "79D13C82-E06F-4A70-A3D1-C09494FBC94D",
              "versionEndExcluding": "5.12.18",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "853187F6-707A-487B-95C0-621B5211B43C",
              "versionEndExcluding": "5.13.3",
              "versionStartIncluding": "5.13",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Avoid HDCP over-read and corruption\n\nInstead of reading the desired 5 bytes of the actual target field,\nthe code was reading 8. This could result in a corrupted value if the\ntrailing 3 bytes were non-zero, so instead use an appropriately sized\nand zero-initialized bounce buffer, and read only 5 bytes before casting\nto u64."
    },
    {
      "lang": "es",
      "value": " En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: drm/amd/display: evita la sobrelectura y la corrupci\u00f3n de HDCP. En lugar de leer los 5 bytes deseados del campo de destino real, el c\u00f3digo le\u00eda 8. Esto podr\u00eda resultar en un archivo da\u00f1ado. valor si los 3 bytes finales fueran distintos de cero, por lo tanto, utilice un b\u00fafer de rebote de tama\u00f1o adecuado e inicializado en cero, y lea solo 5 bytes antes de convertir a u64."
    }
  ],
  "id": "CVE-2021-47348",
  "lastModified": "2025-04-02T14:30:39.097",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2024-05-21T15:15:21.350",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      ],
      "url": "https://git.kernel.org/stable/c/06888d571b513cbfc0b41949948def6cb81021b2"
    },
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    },
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    },
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      ],
      "url": "https://git.kernel.org/stable/c/c5b518f4b98dbb2bc31b6a55e6aaa1e0e2948f2e"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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