fkie_cve-2021-47087
Vulnerability from fkie_nvd
Published
2024-03-04 18:15
Modified
2025-01-16 17:19
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 

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      "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": "2025-01-16T17:19:57.450",
  "metrics": {
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
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          "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"
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        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
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  "published": "2024-03-04T18:15:07.457",
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}


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