UBUNTU-CVE-2018-3640

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    UBUNTU-CVE-2018-3640

    Published: 21 May 2018Last Modified: 4 Feb 2026
    Upstream:
    CVE-2018-3640
    Aliases:
    USN-3756-1

    Summary:

    Details: Systems with microprocessors utilizing speculative execution and that perform speculative reads of system registers may allow unauthorized disclosure of system parameters to an attacker with local user access via a side-channel analysis, aka Rogue System Register Read (RSRE), Variant 3a.

    References: https://ubuntu.com/security/CVE-2018-3640, https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00115.html, https://ubuntu.com/security/notices/USN-3756-1, https://www.cve.org/CVERecord?id=CVE-2018-3640

    Affected packages

    Package

    Name: intel-microcode

    Purl: pkg:deb/ubuntu/[email protected]?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