USN-4905-1

    Dashboard / Vulnerabilities / USN-4905-1

    USN-4905-1

    Published: 13 Apr 2021Last Modified: 22 Apr 2026

    Summary: xorg-server, xorg-server-hwe-16.04, xorg-server-hwe-18.04 vulnerability

    Details: Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled certain lengths of XInput extension ChangeFeedbackControl requests. An attacker could use this issue to cause the server to crash, resulting in a denial of service, or possibly execute arbitrary code.

    References: https://ubuntu.com/security/notices/USN-4905-1, https://ubuntu.com/security/CVE-2021-3472

    Affected packages

    Package

    Name: xorg-server

    Purl: pkg:deb/ubuntu/xorg-server@2:1.18.4-0ubuntu0.12?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2:1.18.4-0ubuntu0.12

    Affected versions

    2:1.17.2-1ubuntu9
    2:1.17.2-1ubuntu10
    2:1.17.3-2ubuntu1
    2:1.17.3-2ubuntu2
    2:1.17.3-2ubuntu3
    2:1.17.3-2ubuntu4

    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
    USN-4905-1 | CVE-DB