CVE-2016-3157

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    CVE-2016-3157

    Published: 12 Apr 2016Last Modified: 15 Mar 2026

    Summary:

    Details: The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which allows local guest OS users to gain privileges, cause a denial of service (guest OS crash), or obtain sensitive information by leveraging I/O port access.

    References: http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html, http://www.securityfocus.com/bid/84594, http://www.securitytracker.com/id/1035308, http://www.ubuntu.com/usn/USN-2997-1, http://www.ubuntu.com/usn/USN-2968-2, http://www.ubuntu.com/usn/USN-2971-2, http://www.debian.org/security/2016/dsa-3607, http://www.ubuntu.com/usn/USN-2968-1, http://www.ubuntu.com/usn/USN-2969-1, http://www.ubuntu.com/usn/USN-2970-1, http://www.ubuntu.com/usn/USN-2971-1, http://www.ubuntu.com/usn/USN-2971-3, http://www.ubuntu.com/usn/USN-2996-1, http://xenbits.xen.org/xsa/advisory-171.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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-2016-3157 | CVE-DB