CVE-2013-1917

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    CVE-2013-1917

    Published: 13 May 2013Last Modified: 10 Apr 2026

    Summary:

    Details: Xen 3.1 through 4.x, when running 64-bit hosts on Intel CPUs, does not clear the NT flag when using an IRET after a SYSENTER instruction, which allows PV guest users to cause a denial of service (hypervisor crash) by triggering a #GP fault, which is not properly handled by another IRET instruction.

    References: http://secunia.com/advisories/55082, http://security.gentoo.org/glsa/glsa-201309-24.xml, http://www.debian.org/security/2012/dsa-2662, http://lists.fedoraproject.org/pipermail/package-announce/2013-May/104537.html, http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00015.html, http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html, http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00000.html, http://lists.opensuse.org/opensuse-updates/2013-06/msg00049.html, http://www.openwall.com/lists/oss-security/2013/04/18/8, http://www.securitytracker.com/id/1028455

    Affected packages

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2013-1917 | CVE-DB