fkie_cve-2022-48899
Vulnerability from fkie_nvd
Published
2024-08-21 07:15
Modified
2024-09-11 16:22
Severity ?
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/virtio: Fix GEM handle creation UAF Userspace can guess the handle value and try to race GEM object creation with handle close, resulting in a use-after-free if we dereference the object after dropping the handle's reference. For that reason, dropping the handle's reference must be done *after* we are done dereferencing the object.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/011ecdbcd520c90c344b872ca6b4821f7783b2f8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/19ec87d06acfab2313ee82b2a689bf0c154e57eaPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/52531258318ed59a2dc5a43df2eaf0eb1d65438ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/68bcd063857075d2f9edfed6024387ac377923e2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/adc48e5e408afbb01d261bd303fd9fbbbaa3e317Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d01d6d2b06c0d8390adf8f3ba08aa60b5642ef73Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.2
linux linux_kernel 6.2
linux linux_kernel 6.2


To clipboard 

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  "cveTags": [],
  "descriptions": [
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/virtio: Fix GEM handle creation UAF\n\nUserspace can guess the handle value and try to race GEM object creation\nwith handle close, resulting in a use-after-free if we dereference the\nobject after dropping the handle\u0027s reference.  For that reason, dropping\nthe handle\u0027s reference must be done *after* we are done dereferencing\nthe object."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/virtio: corrige la creaci\u00f3n del identificador GEM. El espacio de usuario UAF puede adivinar el valor del identificador e intentar acelerar la creaci\u00f3n de objetos GEM con el cierre del identificador, lo que resulta en un use-after-free si desreferenciamos el objeto despu\u00e9s de soltar la referencia del identificador. Por esa raz\u00f3n, la eliminaci\u00f3n de la referencia del identificador debe realizarse *despu\u00e9s* de que hayamos terminado de desreferenciar el objeto."
    }
  ],
  "id": "CVE-2022-48899",
  "lastModified": "2024-09-11T16:22:26.583",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 4.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
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  },
  "published": "2024-08-21T07:15:05.810",
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  "vulnStatus": "Analyzed",
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          "lang": "en",
          "value": "CWE-416"
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      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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