UBUNTU-CVE-2017-12154

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    UBUNTU-CVE-2017-12154

    Published: 26 Sept 2017Last Modified: 26 Aug 2026
    Upstream:
    CVE-2017-12154
    Aliases:
    USN-3469-1
    USN-3469-2
    USN-3487-1

    Summary:

    Details: The prepare_vmcs02 function in arch/x86/kvm/vmx.c in the Linux kernel through 4.13.3 does not ensure that the "CR8-load exiting" and "CR8-store exiting" L0 vmcs02 controls exist in cases where L1 omits the "use TPR shadow" vmcs12 control, which allows KVM L2 guest OS users to obtain read and write access to the hardware CR8 register.

    References: https://ubuntu.com/security/CVE-2017-12154, https://www.spinics.net/lists/kvm/msg155414.html, https://ubuntu.com/security/notices/USN-3469-1, https://ubuntu.com/security/notices/USN-3469-2, https://ubuntu.com/security/notices/USN-3487-1, https://ubuntu.com/security/notices/USN-3698-1, https://ubuntu.com/security/notices/USN-3698-2, https://www.cve.org/CVERecord?id=CVE-2017-12154

    Affected packages

    Package

    Name: linux

    Purl: pkg:deb/ubuntu/linux?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-153.203

    Affected versions

    3.11.0-12.19

    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
    UBUNTU-CVE-2017-12154 | CVE-DB