UBUNTU-CVE-2018-3646

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    UBUNTU-CVE-2018-3646

    Published: 14 Aug 2018Last Modified: 1 Jun 2026
    Upstream:
    CVE-2018-3646
    Aliases:
    USN-3740-1
    USN-3740-2
    USN-3741-1

    Summary:

    Details: Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access with guest OS privilege via a terminal page fault and a side-channel analysis.

    References: https://ubuntu.com/security/CVE-2018-3646, https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/L1TF, https://ubuntu.com/security/notices/USN-3740-1, https://ubuntu.com/security/notices/USN-3740-2, https://ubuntu.com/security/notices/USN-3741-1, https://ubuntu.com/security/notices/USN-3741-2, https://ubuntu.com/security/notices/USN-3742-1, https://ubuntu.com/security/notices/USN-3742-2, https://ubuntu.com/security/notices/USN-3756-1, https://ubuntu.com/security/notices/USN-3823-1, https://www.cve.org/CVERecord?id=CVE-2018-3646

    Affected packages

    Package

    Name: intel-microcode

    Purl: pkg:deb/ubuntu/intel-microcode?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.20180807a.0ubuntu0.14.04.1

    Affected versions

    1.20130906.1ubuntu2
    1.20130906.1ubuntu3

    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