fkie_cve-2021-47289
Vulnerability from fkie_nvd
Published
2024-05-21 15:15
Modified
2024-12-23 16:46
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: ACPI: fix NULL pointer dereference Commit 71f642833284 ("ACPI: utils: Fix reference counting in for_each_acpi_dev_match()") started doing "acpi_dev_put()" on a pointer that was possibly NULL. That fails miserably, because that helper inline function is not set up to handle that case. Just make acpi_dev_put() silently accept a NULL pointer, rather than calling down to put_device() with an invalid offset off that NULL pointer.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/38f54217b423c0101d03a00feec6fb8ec608b12ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cae3fa3d8165761f3000f523b11cfa1cd35206bcPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ccf23a0888077a25a0793a746c3941db2a7562e4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fc68f42aa737dc15e7665a4101d4168aadb8e4c4Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/38f54217b423c0101d03a00feec6fb8ec608b12ePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/cae3fa3d8165761f3000f523b11cfa1cd35206bcPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ccf23a0888077a25a0793a746c3941db2a7562e4Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/fc68f42aa737dc15e7665a4101d4168aadb8e4c4Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.14
linux linux_kernel 5.14


To clipboard 

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    {
      "nodes": [
        {
          "cpeMatch": [
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              "matchCriteriaId": "23DAD647-D3B8-49F9-BBDB-F2F199551C0C",
              "versionEndExcluding": "5.4.139",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: fix NULL pointer dereference\n\nCommit 71f642833284 (\"ACPI: utils: Fix reference counting in\nfor_each_acpi_dev_match()\") started doing \"acpi_dev_put()\" on a pointer\nthat was possibly NULL.  That fails miserably, because that helper\ninline function is not set up to handle that case.\n\nJust make acpi_dev_put() silently accept a NULL pointer, rather than\ncalling down to put_device() with an invalid offset off that NULL\npointer."
    },
    {
      "lang": "es",
      "value": " En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ACPI: corrige la desreferencia del puntero NULL. La confirmaci\u00f3n 71f642833284 (\"ACPI: utils: corrige el recuento de referencias en for_each_acpi_dev_match()\") comenz\u00f3 a hacer \"acpi_dev_put()\" en un puntero que posiblemente era NULL. Eso falla estrepitosamente, porque esa funci\u00f3n auxiliar en l\u00ednea no est\u00e1 configurada para manejar ese caso. Simplemente haga que acpi_dev_put() acepte silenciosamente un puntero NULL, en lugar de llamar a put_device() con un desplazamiento no v\u00e1lido de ese puntero NULL."
    }
  ],
  "id": "CVE-2021-47289",
  "lastModified": "2024-12-23T16:46:39.860",
  "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"
      }
    ]
  },
  "published": "2024-05-21T15:15:16.950",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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