CVE-2013-6400

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    CVE-2013-6400

    Published: 13 Dec 2013Last Modified: 10 Apr 2026

    Summary:

    Details: Xen 4.2.x and 4.3.x, when using Intel VT-d and a PCI device has been assigned, does not clear the flag that suppresses IOMMU TLB flushes when unspecified errors occur, which causes the TLB entries to not be flushed and allows local guest administrators to cause a denial of service (host crash) or gain privileges via unspecified vectors.

    References: http://secunia.com/advisories/55932, http://security.gentoo.org/glsa/glsa-201407-03.xml, http://lists.fedoraproject.org/pipermail/package-announce/2013-December/125081.html, http://lists.fedoraproject.org/pipermail/package-announce/2013-December/125111.html, http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00011.html, http://lists.xen.org/archives/html/xen-announce/2013-12/msg00002.html, http://www.openwall.com/lists/oss-security/2013/12/10/7, http://www.securitytracker.com/id/1029468

    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