FKIE_CVE-2021-47474

Vulnerability from fkie_nvd - Published: 2024-05-22 09:15 - Updated: 2026-06-17 04:17
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: comedi: vmk80xx: fix bulk-buffer overflow The driver is using endpoint-sized buffers but must not assume that the tx and rx buffers are of equal size or a malicious device could overflow the slab-allocated receive buffer when doing bulk transfers.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/063f576c43d589a4c153554b681d32b3f8317c7bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0866dcaa828c21bc2f94dac00e086078f11b5772Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1ae4715121a57bc6fa29fd992127b01907f2f993Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/47b4636ebdbeba2044b3db937c4d2b6a4fe3d0f2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/78cdfd62bd54af615fba9e3ca1ba35de39d3871dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7b0e356189327287d0eb98ec081bd6dd97068cd3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7cfb35db607760698d299fd1cf7402dfa8f09973Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b7fd7f3387f070215e6be341e68eb5c087eeecc0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e0e6a63fd97ad95fe05dfd77268a1952551e11a7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/063f576c43d589a4c153554b681d32b3f8317c7bPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0866dcaa828c21bc2f94dac00e086078f11b5772Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1ae4715121a57bc6fa29fd992127b01907f2f993Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/47b4636ebdbeba2044b3db937c4d2b6a4fe3d0f2Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/78cdfd62bd54af615fba9e3ca1ba35de39d3871dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7b0e356189327287d0eb98ec081bd6dd97068cd3Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7cfb35db607760698d299fd1cf7402dfa8f09973Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b7fd7f3387f070215e6be341e68eb5c087eeecc0Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e0e6a63fd97ad95fe05dfd77268a1952551e11a7Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/comedi/drivers/vmk80xx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e0e6a63fd97ad95fe05dfd77268a1952551e11a7",
              "status": "affected",
              "version": "985cafccbf9b7f862aa1c5ee566801e18b5161fb",
              "versionType": "git"
            },
            {
              "lessThan": "7cfb35db607760698d299fd1cf7402dfa8f09973",
              "status": "affected",
              "version": "985cafccbf9b7f862aa1c5ee566801e18b5161fb",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "985cafccbf9b7f862aa1c5ee566801e18b5161fb",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "985cafccbf9b7f862aa1c5ee566801e18b5161fb",
              "versionType": "git"
            },
            {
              "lessThan": "1ae4715121a57bc6fa29fd992127b01907f2f993",
              "status": "affected",
              "version": "985cafccbf9b7f862aa1c5ee566801e18b5161fb",
              "versionType": "git"
            },
            {
              "lessThan": "b7fd7f3387f070215e6be341e68eb5c087eeecc0",
              "status": "affected",
              "version": "985cafccbf9b7f862aa1c5ee566801e18b5161fb",
              "versionType": "git"
            },
            {
              "lessThan": "7b0e356189327287d0eb98ec081bd6dd97068cd3",
              "status": "affected",
              "version": "985cafccbf9b7f862aa1c5ee566801e18b5161fb",
              "versionType": "git"
            },
            {
              "lessThan": "47b4636ebdbeba2044b3db937c4d2b6a4fe3d0f2",
              "status": "affected",
              "version": "985cafccbf9b7f862aa1c5ee566801e18b5161fb",
              "versionType": "git"
            },
            {
              "lessThan": "78cdfd62bd54af615fba9e3ca1ba35de39d3871d",
              "status": "affected",
              "version": "985cafccbf9b7f862aa1c5ee566801e18b5161fb",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/comedi/drivers/vmk80xx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.31"
            },
            {
              "lessThan": "2.6.31",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.4.*",
              "status": "unaffected",
              "version": "4.4.292",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.290",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.255",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.217",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.159",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.79",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.14.*",
              "status": "unaffected",
              "version": "5.14.18",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "41FE03A0-D680-4E4E-86C7-020EEF6DCD99",
              "versionEndExcluding": "4.4.292",
              "versionStartIncluding": "2.6.31",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "85D8337A-4EA1-4787-85EA-4BF4328A9436",
              "versionEndExcluding": "4.9.290",
              "versionStartIncluding": "4.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "436BD498-0DB1-4290-9A36-A52CB11B3AC3",
              "versionEndExcluding": "4.14.255",
              "versionStartIncluding": "4.10",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "01C66D0E-2D4A-45A8-800F-23022B681325",
              "versionEndExcluding": "4.19.217",
              "versionStartIncluding": "4.15",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A974BD5C-13A1-4974-B68A-6FD1422F5F3B",
              "versionEndExcluding": "5.4.159",
              "versionStartIncluding": "4.20",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "AD6F772D-D9E4-4B9B-9E3C-CD5635E9E88D",
              "versionEndExcluding": "5.10.79",
              "versionStartIncluding": "5.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B51F6469-3DD9-4E3B-8BD5-2E6911301BF1",
              "versionEndExcluding": "5.14.18",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9BFCBC65-4DA5-4C88-B852-E7B052DE9F20",
              "versionEndExcluding": "5.15.2",
              "versionStartIncluding": "5.15",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: vmk80xx: fix bulk-buffer overflow\n\nThe driver is using endpoint-sized buffers but must not assume that the\ntx and rx buffers are of equal size or a malicious device could overflow\nthe slab-allocated receive buffer when doing bulk transfers."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: comedi: vmk80xx: corrige el desbordamiento masivo del b\u00fafer El controlador utiliza b\u00faferes del tama\u00f1o de un endpoint, pero no debe asumir que los b\u00faferes tx y rx son del mismo tama\u00f1o o un dispositivo malicioso podr\u00eda desbordar el b\u00fafer de recepci\u00f3n asignado por losa al realizar transferencias masivas."
    }
  ],
  "id": "CVE-2021-47474",
  "lastModified": "2026-06-17T04:17:33.320",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-47474",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-06-10T18:55:02.820898Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-05-22T09:15:09.287",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/063f576c43d589a4c153554b681d32b3f8317c7b"
    },
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  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.