UBUNTU-CVE-2018-19967

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    UBUNTU-CVE-2018-19967

    Published: 8 Dec 2018Last Modified: 22 Apr 2026
    Upstream:
    CVE-2018-19967

    Summary:

    Details: An issue was discovered in Xen through 4.11.x on Intel x86 platforms allowing guest OS users to cause a denial of service (host OS hang) because Xen does not work around Intel's mishandling of certain HLE transactions associated with the KACQUIRE instruction prefix.

    References: https://ubuntu.com/security/CVE-2018-19967, https://xenbits.xen.org/xsa/advisory-282.txt, https://xenbits.xen.org/xsa/advisory-282.html, https://www.cve.org/CVERecord?id=CVE-2018-19967

    Affected packages

    Package

    Name: xen

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    4.5.1-0ubuntu1
    4.5.1-0ubuntu2

    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