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FKIE_CVE-2018-8781

Vulnerability from fkie_nvd - Published: 2018-04-23 19:29 - Updated: 2026-06-17 02:05
Summary
The udl_fb_mmap function in drivers/gpu/drm/udl/udl_fb.c at the Linux kernel version 3.4 and up to and including 4.15 has an integer-overflow vulnerability allowing local users with access to the udldrmfb driver to obtain full read and write permissions on kernel physical pages, resulting in a code execution in kernel space.
References
cve@checkpoint.comhttps://access.redhat.com/errata/RHSA-2018:2948Third Party Advisory
cve@checkpoint.comhttps://access.redhat.com/errata/RHSA-2018:3083Third Party Advisory
cve@checkpoint.comhttps://access.redhat.com/errata/RHSA-2018:3096Third Party Advisory
cve@checkpoint.comhttps://lists.debian.org/debian-lts-announce/2018/05/msg00000.htmlMailing List, Third Party Advisory
cve@checkpoint.comhttps://patchwork.freedesktop.org/patch/211845/Issue Tracking, Patch, Third Party Advisory
cve@checkpoint.comhttps://research.checkpoint.com/mmap-vulnerabilities-linux-kernel/Third Party Advisory
cve@checkpoint.comhttps://usn.ubuntu.com/3654-1/Third Party Advisory
cve@checkpoint.comhttps://usn.ubuntu.com/3654-2/Third Party Advisory
cve@checkpoint.comhttps://usn.ubuntu.com/3656-1/Third Party Advisory
cve@checkpoint.comhttps://usn.ubuntu.com/3674-1/Third Party Advisory
cve@checkpoint.comhttps://usn.ubuntu.com/3674-2/Third Party Advisory
cve@checkpoint.comhttps://usn.ubuntu.com/3677-1/Third Party Advisory
cve@checkpoint.comhttps://usn.ubuntu.com/3677-2/Third Party Advisory
cve@checkpoint.comhttps://www.debian.org/security/2018/dsa-4187Third Party Advisory
cve@checkpoint.comhttps://www.debian.org/security/2018/dsa-4188Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2018:2948Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2018:3083Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2018:3096Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2018/05/msg00000.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://patchwork.freedesktop.org/patch/211845/Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://research.checkpoint.com/mmap-vulnerabilities-linux-kernel/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3654-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3654-2/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3656-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3674-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3674-2/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3677-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3677-2/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2018/dsa-4187Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2018/dsa-4188Third Party Advisory

{
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          "product": "Linux Kernel",
          "vendor": "Check Point Software Technologies Ltd.",
          "versions": [
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              "status": "affected",
              "version": "kernel version 3.4 and up to and including 4.15"
            }
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      ],
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    }
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The udl_fb_mmap function in drivers/gpu/drm/udl/udl_fb.c at the Linux kernel version 3.4 and up to and including 4.15 has an integer-overflow vulnerability allowing local users with access to the udldrmfb driver to obtain full read and write permissions on kernel physical pages, resulting in a code execution in kernel space."
    },
    {
      "lang": "es",
      "value": "La funci\u00f3n udl_fb_mmap en drivers/gpu/drm/udl/udl_fb.c en el kernel de Linux en su versi\u00f3n 3.4 y hasta e incluyendo la versi\u00f3n 4.15 tiene una vulnerabilidad de desbordamiento de enteros que permite que usuarios locales con acceso al controlador udldrmfb obtengan permisos totales de lectura y escritura en p\u00e1ginas f\u00edsicas del kernel, lo que resulta en la ejecuci\u00f3n de c\u00f3digo en el espacio del kernel."
    }
  ],
  "id": "CVE-2018-8781",
  "lastModified": "2026-06-17T02:05:22.697",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 7.2,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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        "exploitabilityScore": 1.8,
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        "source": "nvd@nist.gov",
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  },
  "published": "2018-04-23T19:29:00.340",
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  "sourceIdentifier": "cve@checkpoint.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
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  ]
}



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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

Author Source Type Date Other

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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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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