CVE-2023-6816

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    CVE-2023-6816

    Published: 18 Jan 2024Last Modified: 16 Apr 2026

    Summary:

    Details: A flaw was found in X.Org server. Both DeviceFocusEvent and the XIQueryPointer reply contain a bit for each logical button currently down. Buttons can be arbitrarily mapped to any value up to 255, but the X.Org Server was only allocating space for the device's particular number of buttons, leading to a heap overflow if a bigger value was used.

    References: https://lists.debian.org/debian-lts-announce/2024/01/msg00016.html, https://lists.fedoraproject.org/archives/list/[email protected]/message/5J4H7CH565ALSZZYKOJFYDA5KFLG6NUK/, https://lists.fedoraproject.org/archives/list/[email protected]/message/EJBMCWQ54R6ZL3MYU2D2JBW6JMZL7BQW/, http://www.openwall.com/lists/oss-security/2024/01/18/1, https://lists.fedoraproject.org/archives/list/[email protected]/message/IZ75X54CN4IFYMIV7OK3JVZ57FHQIGIC/, https://security.gentoo.org/glsa/202401-30, https://security.netapp.com/advisory/ntap-20240307-0006/, https://access.redhat.com/errata/RHSA-2024:2996, https://access.redhat.com/errata/RHSA-2024:0557, https://access.redhat.com/errata/RHSA-2024:0614, https://access.redhat.com/errata/RHSA-2024:0617, https://access.redhat.com/errata/RHSA-2024:2170, https://access.redhat.com/errata/RHSA-2025:12751, https://access.redhat.com/errata/RHSA-2024:0320, https://access.redhat.com/errata/RHSA-2024:0597, https://access.redhat.com/errata/RHSA-2024:0607, https://access.redhat.com/errata/RHSA-2024:0629, https://access.redhat.com/errata/RHSA-2024:2169, https://access.redhat.com/errata/RHSA-2024:0558, https://access.redhat.com/errata/RHSA-2024:0621, https://access.redhat.com/errata/RHSA-2024:0626, https://access.redhat.com/security/cve/CVE-2023-6816, https://bugzilla.redhat.com/show_bug.cgi?id=2257691

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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
    CVE-2023-6816 | CVE-DB