FKIE_CVE-2021-47122

Vulnerability from fkie_nvd - Published: 2024-03-15 21:15 - Updated: 2026-06-17 04:16
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: net: caif: fix memory leak in caif_device_notify In case of caif_enroll_dev() fail, allocated link_support won't be assigned to the corresponding structure. So simply free allocated pointer in case of error
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3be863c11cab725add9fef4237ed4e232c3fc3bbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4bca2034b41c15b62d47a19158bb76235fd4455dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6a0e317f61094d377335547e015dd2ff12caf893Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9348c1f10932f13b299cbc8b1bd5f780751fae49Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/af2806345a37313f01b1c9f15e046745b8ee2daaPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b042e2b2039565eb8f0eb51c14fbe1ef463c8cd8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b53558a950a89824938e9811eddfc8efcd94e1bbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f52f4fd67264c70cd0b4ba326962ebe12d9cba94Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/3be863c11cab725add9fef4237ed4e232c3fc3bbPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4bca2034b41c15b62d47a19158bb76235fd4455dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6a0e317f61094d377335547e015dd2ff12caf893Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/9348c1f10932f13b299cbc8b1bd5f780751fae49Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/af2806345a37313f01b1c9f15e046745b8ee2daaPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b042e2b2039565eb8f0eb51c14fbe1ef463c8cd8Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b53558a950a89824938e9811eddfc8efcd94e1bbPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f52f4fd67264c70cd0b4ba326962ebe12d9cba94Patch
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 5.13
linux linux_kernel 5.13
linux linux_kernel 5.13
linux linux_kernel 5.13
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/caif/caif_dev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b042e2b2039565eb8f0eb51c14fbe1ef463c8cd8",
              "status": "affected",
              "version": "7c18d2205ea76eef9674e59e1ecae4f332a53e9e",
              "versionType": "git"
            },
            {
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              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "7c18d2205ea76eef9674e59e1ecae4f332a53e9e",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "7c18d2205ea76eef9674e59e1ecae4f332a53e9e",
              "versionType": "git"
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            {
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              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "7c18d2205ea76eef9674e59e1ecae4f332a53e9e",
              "versionType": "git"
            },
            {
              "lessThan": "6a0e317f61094d377335547e015dd2ff12caf893",
              "status": "affected",
              "version": "7c18d2205ea76eef9674e59e1ecae4f332a53e9e",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "7c18d2205ea76eef9674e59e1ecae4f332a53e9e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/caif/caif_dev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.3"
            },
            {
              "lessThan": "3.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.4.*",
              "status": "unaffected",
              "version": "4.4.272",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.272",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.236",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.194",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.125",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.43",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1DA24694-E42B-4701-845F-C2C96D93F3B3",
              "versionEndExcluding": "4.4.272",
              "versionStartIncluding": "3.3",
              "vulnerable": true
            },
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            {
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              "versionEndExcluding": "5.10.43",
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            },
            {
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              "versionEndExcluding": "5.12.10",
              "versionStartIncluding": "5.11",
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            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "0CBAD0FC-C281-4666-AB2F-F8E6E1165DF7",
              "vulnerable": true
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              "criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "96AC23B2-D46A-49D9-8203-8E1BEDCA8532",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "DA610E30-717C-4700-9F77-A3C9244F3BFD",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "1ECD33F5-85BE-430B-8F86-8D7BD560311D",
              "vulnerable": true
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          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: caif: fix memory leak in caif_device_notify\n\nIn case of caif_enroll_dev() fail, allocated\nlink_support won\u0027t be assigned to the corresponding\nstructure. So simply free allocated pointer in case\nof error"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: caif: corrige la p\u00e9rdida de memoria en caif_device_notify En caso de que falle caif_enroll_dev(), el link_support asignado no se asignar\u00e1 a la estructura correspondiente. As\u00ed que simplemente libera el puntero asignado en caso de error."
    }
  ],
  "id": "CVE-2021-47122",
  "lastModified": "2026-06-17T04:16:34.420",
  "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"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-47122",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-06-21T16:10:05.257169Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-03-15T21:15:07.157",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/3be863c11cab725add9fef4237ed4e232c3fc3bb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "url": "https://git.kernel.org/stable/c/4bca2034b41c15b62d47a19158bb76235fd4455d"
    },
    {
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "url": "https://git.kernel.org/stable/c/9348c1f10932f13b299cbc8b1bd5f780751fae49"
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    },
    {
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    },
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    },
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      "tags": [
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      "url": "https://git.kernel.org/stable/c/4bca2034b41c15b62d47a19158bb76235fd4455d"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/6a0e317f61094d377335547e015dd2ff12caf893"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/9348c1f10932f13b299cbc8b1bd5f780751fae49"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/af2806345a37313f01b1c9f15e046745b8ee2daa"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      ],
      "url": "https://git.kernel.org/stable/c/b042e2b2039565eb8f0eb51c14fbe1ef463c8cd8"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      ],
      "url": "https://git.kernel.org/stable/c/b53558a950a89824938e9811eddfc8efcd94e1bb"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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      "url": "https://git.kernel.org/stable/c/f52f4fd67264c70cd0b4ba326962ebe12d9cba94"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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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

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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.
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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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