CVE-2015-8338

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    CVE-2015-8338

    Published: 17 Dec 2015Last Modified: 16 Apr 2026

    Summary:

    Details: Xen 4.6.x and earlier does not properly enforce limits on page order inputs for the (1) XENMEM_increase_reservation, (2) XENMEM_populate_physmap, (3) XENMEM_exchange, and possibly other HYPERVISOR_memory_op suboperations, which allows ARM guest OS administrators to cause a denial of service (CPU consumption, guest reboot, or watchdog timeout and host reboot) and possibly have unspecified other impact via unknown vectors.

    References: http://www.debian.org/security/2016/dsa-3633, http://xenbits.xen.org/xsa/advisory-158.html, http://www.securityfocus.com/bid/78920, http://www.securitytracker.com/id/1034390

    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