FKIE_CVE-2015-0239

Vulnerability from fkie_nvd - Published: 2015-03-02 11:59 - Updated: 2026-06-17 00:19
Severity
Summary
The em_sysenter function in arch/x86/kvm/emulate.c in the Linux kernel before 3.18.5, when the guest OS lacks SYSENTER MSR initialization, allows guest OS users to gain guest OS privileges or cause a denial of service (guest OS crash) by triggering use of a 16-bit code segment for emulation of a SYSENTER instruction.
References
secalert@redhat.comhttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f3747379accba8e95d70cec0eae0582c8c182050
secalert@redhat.comhttp://permalink.gmane.org/gmane.linux.kernel.commits.head/502245Broken Link
secalert@redhat.comhttp://rhn.redhat.com/errata/RHSA-2015-1272.htmlThird Party Advisory
secalert@redhat.comhttp://www.debian.org/security/2015/dsa-3170Third Party Advisory
secalert@redhat.comhttp://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5Release Notes, Vendor Advisory
secalert@redhat.comhttp://www.mandriva.com/security/advisories?name=MDVSA-2015:058Third Party Advisory
secalert@redhat.comhttp://www.openwall.com/lists/oss-security/2015/01/27/6Exploit, Mailing List, Third Party Advisory
secalert@redhat.comhttp://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.htmlThird Party Advisory
secalert@redhat.comhttp://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.htmlThird Party Advisory
secalert@redhat.comhttp://www.securityfocus.com/bid/72842Third Party Advisory, VDB Entry
secalert@redhat.comhttp://www.ubuntu.com/usn/USN-2513-1Third Party Advisory
secalert@redhat.comhttp://www.ubuntu.com/usn/USN-2514-1Third Party Advisory
secalert@redhat.comhttp://www.ubuntu.com/usn/USN-2515-1Third Party Advisory
secalert@redhat.comhttp://www.ubuntu.com/usn/USN-2516-1Third Party Advisory
secalert@redhat.comhttp://www.ubuntu.com/usn/USN-2517-1Third Party Advisory
secalert@redhat.comhttp://www.ubuntu.com/usn/USN-2518-1Third Party Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1186448Issue Tracking, Third Party Advisory
secalert@redhat.comhttps://github.com/torvalds/linux/commit/f3747379accba8e95d70cec0eae0582c8c182050Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f3747379accba8e95d70cec0eae0582c8c182050
af854a3a-2127-422b-91ae-364da2661108http://permalink.gmane.org/gmane.linux.kernel.commits.head/502245Broken Link
af854a3a-2127-422b-91ae-364da2661108http://rhn.redhat.com/errata/RHSA-2015-1272.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2015/dsa-3170Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.mandriva.com/security/advisories?name=MDVSA-2015:058Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2015/01/27/6Exploit, Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/72842Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-2513-1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-2514-1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-2515-1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-2516-1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-2517-1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-2518-1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1186448Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/f3747379accba8e95d70cec0eae0582c8c182050Patch, Third Party Advisory

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
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              "versionEndExcluding": "3.18.5",
              "vulnerable": true
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          ],
          "negate": false,
          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The em_sysenter function in arch/x86/kvm/emulate.c in the Linux kernel before 3.18.5, when the guest OS lacks SYSENTER MSR initialization, allows guest OS users to gain guest OS privileges or cause a denial of service (guest OS crash) by triggering use of a 16-bit code segment for emulation of a SYSENTER instruction."
    },
    {
      "lang": "es",
      "value": "La funci\u00f3n em_sysenter en arch/x86/kvm/emulate.c en el kernel de Linux anterior a 3.18.5, cuando al sistema operativo invitado le falta la inicializaci\u00f3n SYSENTER MSR, permite a usuarios del sistema operativo invitado ganar privilegios del sistema operativo invitado o causar una denegaci\u00f3n de servicio (ca\u00edda del sistema operativo invitado) mediante la provocaci\u00f3n del uso de un segmento de c\u00f3digo de 16 bits para la emulaci\u00f3n de una instrucci\u00f3n SYSENTER."
    }
  ],
  "id": "CVE-2015-0239",
  "lastModified": "2026-06-17T00:19:48.033",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.4,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.4,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ]
  },
  "published": "2015-03-02T11:59:04.693",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f3747379accba8e95d70cec0eae0582c8c182050"
    },
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    },
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      ],
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    },
    {
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      ],
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    },
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  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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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.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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