FKIE_CVE-2021-47051

Vulnerability from fkie_nvd - Published: 2024-02-28 09:15 - 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: spi: fsl-lpspi: Fix PM reference leak in lpspi_prepare_xfer_hardware() pm_runtime_get_sync will increment pm usage counter even it failed. Forgetting to putting operation will result in reference leak here. Fix it by replacing it with pm_runtime_resume_and_get to keep usage counter balanced.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4a01ad002d2e03c399af536562693752af7c81b1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6a2b5cee0d31ab6cc51030c441135b0e31217282Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a03675497970a93fcf25d81d9d92a59c2d7377a7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b8207bfc539cd07d15e753ff2d179c5b61c673b1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ce02e58ddf8658a4c3bed2296f32a5873b3f7ccePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4a01ad002d2e03c399af536562693752af7c81b1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6a2b5cee0d31ab6cc51030c441135b0e31217282Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a03675497970a93fcf25d81d9d92a59c2d7377a7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b8207bfc539cd07d15e753ff2d179c5b61c673b1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ce02e58ddf8658a4c3bed2296f32a5873b3f7ccePatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/spi/spi-fsl-lpspi.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4a01ad002d2e03c399af536562693752af7c81b1",
              "status": "affected",
              "version": "944c01a889d97dc08e1b71f4ed868f4023fd6034",
              "versionType": "git"
            },
            {
              "lessThan": "ce02e58ddf8658a4c3bed2296f32a5873b3f7cce",
              "status": "affected",
              "version": "944c01a889d97dc08e1b71f4ed868f4023fd6034",
              "versionType": "git"
            },
            {
              "lessThan": "b8207bfc539cd07d15e753ff2d179c5b61c673b1",
              "status": "affected",
              "version": "944c01a889d97dc08e1b71f4ed868f4023fd6034",
              "versionType": "git"
            },
            {
              "lessThan": "6a2b5cee0d31ab6cc51030c441135b0e31217282",
              "status": "affected",
              "version": "944c01a889d97dc08e1b71f4ed868f4023fd6034",
              "versionType": "git"
            },
            {
              "lessThan": "a03675497970a93fcf25d81d9d92a59c2d7377a7",
              "status": "affected",
              "version": "944c01a889d97dc08e1b71f4ed868f4023fd6034",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/spi/spi-fsl-lpspi.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.2"
            },
            {
              "lessThan": "5.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.119",
              "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"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "459F61B2-E7E5-43BE-8A31-15469C31F827",
              "versionEndExcluding": "5.4.119",
              "versionStartIncluding": "5.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7A4CF5D6-ACBA-4980-ABFD-3D7A53B5BB4E",
              "versionEndExcluding": "5.10.37",
              "versionStartIncluding": "5.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8CBB94EC-EC33-4464-99C5-03E5542715F0",
              "versionEndExcluding": "5.11.21",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D8C7052F-1B7B-4327-9C2B-84EBF3243838",
              "versionEndExcluding": "5.12.4",
              "versionStartIncluding": "5.12",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: fsl-lpspi: Fix PM reference leak in lpspi_prepare_xfer_hardware()\n\npm_runtime_get_sync will increment pm usage counter even it failed.\nForgetting to putting operation will result in reference leak here.\nFix it by replacing it with pm_runtime_resume_and_get to keep usage\ncounter balanced."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: spi: fsl-lpspi: corrige la fuga de referencia de PM en lpspi_prepare_xfer_hardware() pm_runtime_get_sync incrementar\u00e1 el contador de uso de PM incluso si falla. Olvidarse de poner en funcionamiento resultar\u00e1 en una fuga de referencia aqu\u00ed. Solucionelo reemplaz\u00e1ndolo con pm_runtime_resume_and_get para mantener el contador de uso equilibrado."
    }
  ],
  "id": "CVE-2021-47051",
  "lastModified": "2026-06-17T04:16:18.990",
  "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-2021-47051",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-10T15:57:35.223883Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-02-28T09:15:40.517",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/4a01ad002d2e03c399af536562693752af7c81b1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/6a2b5cee0d31ab6cc51030c441135b0e31217282"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a03675497970a93fcf25d81d9d92a59c2d7377a7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/b8207bfc539cd07d15e753ff2d179c5b61c673b1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ce02e58ddf8658a4c3bed2296f32a5873b3f7cce"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/4a01ad002d2e03c399af536562693752af7c81b1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/6a2b5cee0d31ab6cc51030c441135b0e31217282"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a03675497970a93fcf25d81d9d92a59c2d7377a7"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/b8207bfc539cd07d15e753ff2d179c5b61c673b1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ce02e58ddf8658a4c3bed2296f32a5873b3f7cce"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "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.

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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 patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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