FKIE_CVE-2021-46953

Vulnerability from fkie_nvd - Published: 2024-02-27 19:04 - Updated: 2024-11-21 06:35
Severity ?
6.7 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure When failing the driver probe because of invalid firmware properties, the GTDT driver unmaps the interrupt that it mapped earlier. However, it never checks whether the mapping of the interrupt actially succeeded. Even more, should the firmware report an illegal interrupt number that overlaps with the GIC SGI range, this can result in an IPI being unmapped, and subsequent fireworks (as reported by Dann Frazier). Rework the driver to have a slightly saner behaviour and actually check whether the interrupt has been mapped before unmapping things.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1ecd5b129252249b9bc03d7645a7bda512747277Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/42e69521ee1fa5abf21f478d147d06bbfe6bf6a8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/504632a3577a049dd9bb7aabae5b4476f9c586b4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/596e079c362ac17ed02aa1b99fdc444d62072a01Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7b2162db1498c71962a4bb2f776fa4e76d4d305bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c3385a9122f8db15b453e07bfc88117fce7f3724Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e0f2d86481eaa83df33b0793f75212919db7a19dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1ecd5b129252249b9bc03d7645a7bda512747277Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/42e69521ee1fa5abf21f478d147d06bbfe6bf6a8Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/504632a3577a049dd9bb7aabae5b4476f9c586b4Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/596e079c362ac17ed02aa1b99fdc444d62072a01Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7b2162db1498c71962a4bb2f776fa4e76d4d305bPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c3385a9122f8db15b453e07bfc88117fce7f3724Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e0f2d86481eaa83df33b0793f75212919db7a19dPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: GTDT: Don\u0027t corrupt interrupt mappings on watchdow probe failure\n\nWhen failing the driver probe because of invalid firmware properties,\nthe GTDT driver unmaps the interrupt that it mapped earlier.\n\nHowever, it never checks whether the mapping of the interrupt actially\nsucceeded. Even more, should the firmware report an illegal interrupt\nnumber that overlaps with the GIC SGI range, this can result in an\nIPI being unmapped, and subsequent fireworks (as reported by Dann\nFrazier).\n\nRework the driver to have a slightly saner behaviour and actually\ncheck whether the interrupt has been mapped before unmapping things."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ACPI: GTDT: no corrompe las asignaciones de interrupciones en caso de falla de la sonda de vigilancia. Cuando falla la sonda del controlador debido a propiedades de firmware no v\u00e1lidas, el controlador GTDT desasigna la interrupci\u00f3n que asign\u00f3 anteriormente. Sin embargo, nunca comprueba si el mapeo de la interrupci\u00f3n realmente tuvo \u00e9xito. A\u00fan m\u00e1s, si el firmware informa un n\u00famero de interrupci\u00f3n ilegal que se superpone con el rango GIC SGI, esto puede resultar en que un IPI no se asigne y en posteriores fuegos artificiales (seg\u00fan lo informado por Dann Frazier). Vuelva a trabajar el controlador para que tenga un comportamiento un poco m\u00e1s sensato y verifique si la interrupci\u00f3n se ha asignado antes de desasignar las cosas."
    }
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  "id": "CVE-2021-46953",
  "lastModified": "2024-11-21T06:35:01.110",
  "metrics": {
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 0.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2024-02-27T19:04:06.567",
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  "vulnStatus": "Modified",
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}


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