CVE-2015-7971

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    CVE-2015-7971

    Published: 30 Oct 2015Last Modified: 16 Apr 2026

    Summary:

    Details: Xen 3.2.x through 4.6.x does not limit the number of printk console messages when logging certain pmu and profiling hypercalls, which allows local guests to cause a denial of service via a sequence of crafted (1) HYPERCALL_xenoprof_op hypercalls, which are not properly handled in the do_xenoprof_op function in common/xenoprof.c, or (2) HYPERVISOR_xenpmu_op hypercalls, which are not properly handled in the do_xenpmu_op function in arch/x86/cpu/vpmu.c.

    References: http://www.debian.org/security/2015/dsa-3414, http://xenbits.xen.org/xsa/advisory-152.html, https://security.gentoo.org/glsa/201604-03, http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html, http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html, http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html, http://lists.opensuse.org/opensuse-updates/2015-11/msg00063.html, http://support.citrix.com/article/CTX202404, http://www.securityfocus.com/bid/77363, http://www.securitytracker.com/id/1034035

    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