FKIE_CVE-2021-47087

Vulnerability from fkie_nvd - Published: 2024-03-04 18:15 - Updated: 2026-06-17 04:16
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: tee: optee: Fix incorrect page free bug Pointer to the allocated pages (struct page *page) has already progressed towards the end of allocation. It is incorrect to perform __free_pages(page, order) using this pointer as we would free any arbitrary pages. Fix this by stop modifying the page pointer.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/18549bf4b21c739a9def39f27dcac53e27286ab5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/806142c805cacd098e61bdc0f72c778a2389fe4aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/91e94e42f6fc49635f1a16d8ae3f79552bcfda29Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ad338d825e3f7b96ee542bf313728af2d19fe9adPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/18549bf4b21c739a9def39f27dcac53e27286ab5Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/806142c805cacd098e61bdc0f72c778a2389fe4aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/91e94e42f6fc49635f1a16d8ae3f79552bcfda29Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ad338d825e3f7b96ee542bf313728af2d19fe9adPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.16
linux linux_kernel 5.16
linux linux_kernel 5.16
linux linux_kernel 5.16
linux linux_kernel 5.16
linux linux_kernel 5.16
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/tee/optee/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "806142c805cacd098e61bdc0f72c778a2389fe4a",
              "status": "affected",
              "version": "3c712f14d8a9354a8807c15c64c8dd334499cc42",
              "versionType": "git"
            },
            {
              "lessThan": "ad338d825e3f7b96ee542bf313728af2d19fe9ad",
              "status": "affected",
              "version": "1340dc3fb75ea69221f4f5dcb0cbace55ad0331c",
              "versionType": "git"
            },
            {
              "lessThan": "91e94e42f6fc49635f1a16d8ae3f79552bcfda29",
              "status": "affected",
              "version": "ec185dd3ab257dc2a60953fdf1b6622f524cc5b7",
              "versionType": "git"
            },
            {
              "lessThan": "18549bf4b21c739a9def39f27dcac53e27286ab5",
              "status": "affected",
              "version": "ec185dd3ab257dc2a60953fdf1b6622f524cc5b7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "255e17923b22cb7abd026e044416d61f6bd0eec0",
              "versionType": "git"
            },
            {
              "lessThan": "5.4.169",
              "status": "affected",
              "version": "5.4.140",
              "versionType": "semver"
            },
            {
              "lessThan": "5.10.89",
              "status": "affected",
              "version": "5.10.58",
              "versionType": "semver"
            },
            {
              "lessThan": "5.14",
              "status": "affected",
              "version": "5.13.10",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/tee/optee/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.14"
            },
            {
              "lessThan": "5.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.169",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.89",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.12",
              "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": "BD9286B3-E302-41A2-8F05-3280C4D48A3D",
              "versionEndExcluding": "5.4.169",
              "versionStartIncluding": "5.4.140",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B7AF1F06-B296-4122-83D6-FBDD3435C287",
              "versionEndExcluding": "5.10.89",
              "versionStartIncluding": "5.10.58",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "5.15.12",
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              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "357AA433-37E8-4323-BFB2-3038D6E4B414",
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            },
            {
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              "matchCriteriaId": "A73429BA-C2D9-4D0C-A75F-06A1CA8B3983",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "F621B5E3-E99D-49E7-90B9-EC3B77C95383",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc4:*:*:*:*:*:*",
              "matchCriteriaId": "F7BFDCAA-1650-49AA-8462-407DD593F94F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc5:*:*:*:*:*:*",
              "matchCriteriaId": "6EC9882F-866D-4ACB-8FBC-213D8D8436C8",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc6:*:*:*:*:*:*",
              "matchCriteriaId": "8A0915FE-A4AA-4C94-B783-CF29D81E7E54",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntee: optee: Fix incorrect page free bug\n\nPointer to the allocated pages (struct page *page) has already\nprogressed towards the end of allocation. It is incorrect to perform\n__free_pages(page, order) using this pointer as we would free any\narbitrary pages. Fix this by stop modifying the page pointer."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: tee: optee: corrige el error de liberaci\u00f3n de p\u00e1gina incorrecta. El puntero a las p\u00e1ginas asignadas (p\u00e1gina de estructura *p\u00e1gina) ya ha avanzado hacia el final de la asignaci\u00f3n. Es incorrecto ejecutar __free_pages(page, order) usando este puntero ya que liberar\u00edamos p\u00e1ginas arbitrarias. Solucione este problema dejando de modificar el puntero de la p\u00e1gina."
    }
  ],
  "id": "CVE-2021-47087",
  "lastModified": "2026-06-17T04:16:26.117",
  "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-2021-47087",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-03-06T20:26:26.296406Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-03-04T18:15:07.457",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/18549bf4b21c739a9def39f27dcac53e27286ab5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/806142c805cacd098e61bdc0f72c778a2389fe4a"
    },
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      "tags": [
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      "url": "https://git.kernel.org/stable/c/91e94e42f6fc49635f1a16d8ae3f79552bcfda29"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      ],
      "url": "https://git.kernel.org/stable/c/ad338d825e3f7b96ee542bf313728af2d19fe9ad"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
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      "url": "https://git.kernel.org/stable/c/18549bf4b21c739a9def39f27dcac53e27286ab5"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/806142c805cacd098e61bdc0f72c778a2389fe4a"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/91e94e42f6fc49635f1a16d8ae3f79552bcfda29"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      ],
      "url": "https://git.kernel.org/stable/c/ad338d825e3f7b96ee542bf313728af2d19fe9ad"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-763"
        }
      ],
      "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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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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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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