UBUNTU-CVE-2018-7858

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    UBUNTU-CVE-2018-7858

    Published: 12 Mar 2018Last Modified: 4 Feb 2026
    Upstream:
    CVE-2018-7858
    Aliases:
    USN-3649-1

    Summary:

    Details: Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) by leveraging incorrect region calculation when updating VGA display.

    References: https://ubuntu.com/security/CVE-2018-7858, https://lists.nongnu.org/archive/html/qemu-devel/2018-03/msg02174.html, https://ubuntu.com/security/notices/USN-3649-1, https://www.cve.org/CVERecord?id=CVE-2018-7858

    Affected packages

    Package

    Name: qemu

    Purl: pkg:deb/ubuntu/qemu@1:2.11+dfsg-1ubuntu7.1?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:2.11+dfsg-1ubuntu7.1

    Affected versions

    1:2.10+dfsg-0ubuntu3

    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