cve-2021-47046
Vulnerability from cvelistv5
Published
2024-02-28 08:13
Modified
2024-12-19 07:34
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix off by one in hdmi_14_process_transaction() The hdcp_i2c_offsets[] array did not have an entry for HDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE so it led to an off by one read overflow. I added an entry and copied the 0x0 value for the offset from similar code in drivers/gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c. I also declared several of these arrays as having HDCP_MESSAGE_ID_MAX entries. This doesn't change the code, but it's just a belt and suspenders approach to try future proof the code.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/080bd41d6478a64edf96704fddcda52b1fd5fed7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/403c4528e5887af3deb9838cb77a557631d1e138Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6a58310d5d1e5b02d0fc9b393ba540c9367bced5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8e6fafd5a22e7a2eb216f5510db7aab54cc545c1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/080bd41d6478a64edf96704fddcda52b1fd5fed7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/403c4528e5887af3deb9838cb77a557631d1e138Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6a58310d5d1e5b02d0fc9b393ba540c9367bced5Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8e6fafd5a22e7a2eb216f5510db7aab54cc545c1Patch
Impacted products
Vendor Product Version
Linux Linux Version: 5.5
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47046",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-02-28T20:31:21.379702Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:15:14.997Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:24:39.795Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/403c4528e5887af3deb9838cb77a557631d1e138"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/6a58310d5d1e5b02d0fc9b393ba540c9367bced5"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/080bd41d6478a64edf96704fddcda52b1fd5fed7"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/8e6fafd5a22e7a2eb216f5510db7aab54cc545c1"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "403c4528e5887af3deb9838cb77a557631d1e138",
              "status": "affected",
              "version": "4c283fdac08abf3211533f70623c90a34f41d08d",
              "versionType": "git"
            },
            {
              "lessThan": "6a58310d5d1e5b02d0fc9b393ba540c9367bced5",
              "status": "affected",
              "version": "4c283fdac08abf3211533f70623c90a34f41d08d",
              "versionType": "git"
            },
            {
              "lessThan": "080bd41d6478a64edf96704fddcda52b1fd5fed7",
              "status": "affected",
              "version": "4c283fdac08abf3211533f70623c90a34f41d08d",
              "versionType": "git"
            },
            {
              "lessThan": "8e6fafd5a22e7a2eb216f5510db7aab54cc545c1",
              "status": "affected",
              "version": "4c283fdac08abf3211533f70623c90a34f41d08d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.5"
            },
            {
              "lessThan": "5.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.37",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.11.*",
              "status": "unaffected",
              "version": "5.11.21",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix off by one in hdmi_14_process_transaction()\n\nThe hdcp_i2c_offsets[] array did not have an entry for\nHDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE so it led to an off by one\nread overflow.  I added an entry and copied the 0x0 value for the offset\nfrom similar code in drivers/gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c.\n\nI also declared several of these arrays as having HDCP_MESSAGE_ID_MAX\nentries.  This doesn\u0027t change the code, but it\u0027s just a belt and\nsuspenders approach to try future proof the code."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T07:34:14.214Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/403c4528e5887af3deb9838cb77a557631d1e138"
        },
        {
          "url": "https://git.kernel.org/stable/c/6a58310d5d1e5b02d0fc9b393ba540c9367bced5"
        },
        {
          "url": "https://git.kernel.org/stable/c/080bd41d6478a64edf96704fddcda52b1fd5fed7"
        },
        {
          "url": "https://git.kernel.org/stable/c/8e6fafd5a22e7a2eb216f5510db7aab54cc545c1"
        }
      ],
      "title": "drm/amd/display: Fix off by one in hdmi_14_process_transaction()",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47046",
    "datePublished": "2024-02-28T08:13:50.320Z",
    "dateReserved": "2024-02-27T18:42:55.970Z",
    "dateUpdated": "2024-12-19T07:34:14.214Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47046\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-28T09:15:40.277\",\"lastModified\":\"2024-12-09T19:02:52.227\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/amd/display: Fix off by one in hdmi_14_process_transaction()\\n\\nThe hdcp_i2c_offsets[] array did not have an entry for\\nHDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE so it led to an off by one\\nread overflow.  I added an entry and copied the 0x0 value for the offset\\nfrom similar code in drivers/gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c.\\n\\nI also declared several of these arrays as having HDCP_MESSAGE_ID_MAX\\nentries.  This doesn\u0027t change the code, but it\u0027s just a belt and\\nsuspenders approach to try future proof the code.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: drm/amd/display: correcci\u00f3n por uno en hdmi_14_process_transaction() La matriz hdcp_i2c_offsets[] no ten\u00eda una entrada para HDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE, por lo que provoc\u00f3 un desbordamiento de lectura desactivado por uno. Agregu\u00e9 una entrada y copi\u00e9 el valor 0x0 para el desplazamiento de un c\u00f3digo similar en drivers/gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c. Tambi\u00e9n declar\u00e9 que varias de estas matrices ten\u00edan entradas HDCP_MESSAGE_ID_MAX. Esto no cambia el c\u00f3digo, pero es solo un enfoque de cintur\u00f3n y tirantes para probar el c\u00f3digo a prueba de futuro.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-193\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.37\",\"matchCriteriaId\":\"7A4CF5D6-ACBA-4980-ABFD-3D7A53B5BB4E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.11.21\",\"matchCriteriaId\":\"8CBB94EC-EC33-4464-99C5-03E5542715F0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.12\",\"versionEndExcluding\":\"5.12.4\",\"matchCriteriaId\":\"D8C7052F-1B7B-4327-9C2B-84EBF3243838\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/080bd41d6478a64edf96704fddcda52b1fd5fed7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/403c4528e5887af3deb9838cb77a557631d1e138\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6a58310d5d1e5b02d0fc9b393ba540c9367bced5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8e6fafd5a22e7a2eb216f5510db7aab54cc545c1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/080bd41d6478a64edf96704fddcda52b1fd5fed7\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/403c4528e5887af3deb9838cb77a557631d1e138\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6a58310d5d1e5b02d0fc9b393ba540c9367bced5\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8e6fafd5a22e7a2eb216f5510db7aab54cc545c1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.