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FKIE_CVE-2021-47166

Vulnerability from fkie_nvd - Published: 2024-03-25 10:15 - 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: NFS: Don't corrupt the value of pg_bytes_written in nfs_do_recoalesce() The value of mirror->pg_bytes_written should only be updated after a successful attempt to flush out the requests on the list.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0d0ea309357dea0d85a82815f02157eb7fcda39fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2fe1cac336b55a1f79e603e9ce3552c3623e90ebPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/40f139a6d50c232c0d1fd1c5e65a845c62db0edePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7087db95c0a06ab201b8ebfac6a7ec1e34257997Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/785917316b25685c9b3a2a88f933139f2de75e33Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b291baae24f876acd5a5dd57d0bb2bbac8a68b0cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c757c1f1e65d89429db1409429436cf40d47c008Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e8b8418ce14ae66ee55179901edd12191ab06a9ePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0d0ea309357dea0d85a82815f02157eb7fcda39fPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2fe1cac336b55a1f79e603e9ce3552c3623e90ebPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/40f139a6d50c232c0d1fd1c5e65a845c62db0edePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7087db95c0a06ab201b8ebfac6a7ec1e34257997Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/785917316b25685c9b3a2a88f933139f2de75e33Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b291baae24f876acd5a5dd57d0bb2bbac8a68b0cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c757c1f1e65d89429db1409429436cf40d47c008Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e8b8418ce14ae66ee55179901edd12191ab06a9ePatch
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
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/nfs/pagelist.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e8b8418ce14ae66ee55179901edd12191ab06a9e",
              "status": "affected",
              "version": "a7d42ddb3099727f58366fa006f850a219cce6c8",
              "versionType": "git"
            },
            {
              "lessThan": "b291baae24f876acd5a5dd57d0bb2bbac8a68b0c",
              "status": "affected",
              "version": "a7d42ddb3099727f58366fa006f850a219cce6c8",
              "versionType": "git"
            },
            {
              "lessThan": "c757c1f1e65d89429db1409429436cf40d47c008",
              "status": "affected",
              "version": "a7d42ddb3099727f58366fa006f850a219cce6c8",
              "versionType": "git"
            },
            {
              "lessThan": "40f139a6d50c232c0d1fd1c5e65a845c62db0ede",
              "status": "affected",
              "version": "a7d42ddb3099727f58366fa006f850a219cce6c8",
              "versionType": "git"
            },
            {
              "lessThan": "785917316b25685c9b3a2a88f933139f2de75e33",
              "status": "affected",
              "version": "a7d42ddb3099727f58366fa006f850a219cce6c8",
              "versionType": "git"
            },
            {
              "lessThan": "7087db95c0a06ab201b8ebfac6a7ec1e34257997",
              "status": "affected",
              "version": "a7d42ddb3099727f58366fa006f850a219cce6c8",
              "versionType": "git"
            },
            {
              "lessThan": "2fe1cac336b55a1f79e603e9ce3552c3623e90eb",
              "status": "affected",
              "version": "a7d42ddb3099727f58366fa006f850a219cce6c8",
              "versionType": "git"
            },
            {
              "lessThan": "0d0ea309357dea0d85a82815f02157eb7fcda39f",
              "status": "affected",
              "version": "a7d42ddb3099727f58366fa006f850a219cce6c8",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/nfs/pagelist.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.0"
            },
            {
              "lessThan": "4.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.4.*",
              "status": "unaffected",
              "version": "4.4.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.235",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.193",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.124",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "2DB78FDC-C9EA-4ACD-A898-A03A3597EEDF",
              "versionEndExcluding": "4.4.271",
              "versionStartIncluding": "4.0",
              "vulnerable": true
            },
            {
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            {
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              "versionEndExcluding": "4.19.193",
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            },
            {
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            },
            {
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              "versionEndExcluding": "5.10.42",
              "versionStartIncluding": "5.5",
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            },
            {
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              "matchCriteriaId": "2C8A1D02-81A7-44E5-ACFD-CC6A6694F930",
              "versionEndExcluding": "5.12.9",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "0CBAD0FC-C281-4666-AB2F-F8E6E1165DF7",
              "vulnerable": true
            },
            {
              "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
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFS: Don\u0027t corrupt the value of pg_bytes_written in nfs_do_recoalesce()\n\nThe value of mirror-\u003epg_bytes_written should only be updated after a\nsuccessful attempt to flush out the requests on the list."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: NFS: no corrompa el valor de pg_bytes_writing en nfs_do_recoalesce() El valor de mirror-\u0026gt;pg_bytes_write solo debe actualizarse despu\u00e9s de un intento exitoso de eliminar las solicitudes de la lista."
    }
  ],
  "id": "CVE-2021-47166",
  "lastModified": "2026-06-17T04:16:48.780",
  "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-2021-47166",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-10T15:54:41.157060Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-03-25T10:15:08.667",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/0d0ea309357dea0d85a82815f02157eb7fcda39f"
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    },
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    },
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    },
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      "tags": [
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      ],
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    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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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/785917316b25685c9b3a2a88f933139f2de75e33"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/b291baae24f876acd5a5dd57d0bb2bbac8a68b0c"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      ],
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    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
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      "url": "https://git.kernel.org/stable/c/e8b8418ce14ae66ee55179901edd12191ab06a9e"
    }
  ],
  "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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.