ALSA-2026:85193

    Dashboard / Vulnerabilities / ALSA-2026:85193

    ALSA-2026:85193

    Published: 19 Oct 2026Last Modified: 29 Oct 2026

    Summary: Important: xorg-x11-server-Xwayland security update

    Details: Xwayland is an X server for running X clients under Wayland. Security Fix(es): * xorg-x11-server: xorg-x11-server: Arbitrary code execution via use-after-free in passive grab handling (CVE-2026-93516) * xorg-x11-server: xorg-x11-server: Privilege escalation via crafted RandR provider property requests (CVE-2026-93521) * xorg-x11-server: xwayland: xorg-x11-server: Arbitrary code execution via double-free in XKB geometry handling (CVE-2026-88812) * xorg-x11-server: xorg-x11-server: Out-of-bounds write via unvalidated modifier in ProcXIPassiveUngrabDevice (CVE-2026-93523) * xorg-x11-server: glamor: size tmp_bits buffer for source coordinate range in upload_boxes (CVE-2026-93522) * xorg-x11-server: xorg-x11-server: arbitrary code execution via GLX RenderLarge heap-based buffer overflow (CVE-2026-93517) * xorg-x11-server: xorg-x11-server: arbitrary code execution via integer truncation during keyboard mapping resize (CVE-2026-93518) * xorg-x11-server: xorg-x11-server: Arbitrary code execution via buffer overflow in input_constrain_cursor() (CVE-2026-93519) * xorg-x11-server: xorg-x11-server: arbitrary code execution via out-of-bounds write in XKB keycode handling (CVE-2026-93520) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

    References: https://access.redhat.com/errata/RHSA-2026:85193, https://access.redhat.com/security/cve/CVE-2026-88812, https://access.redhat.com/security/cve/CVE-2026-93516, https://access.redhat.com/security/cve/CVE-2026-93517, https://access.redhat.com/security/cve/CVE-2026-93518, https://access.redhat.com/security/cve/CVE-2026-93519, https://access.redhat.com/security/cve/CVE-2026-93520, https://access.redhat.com/security/cve/CVE-2026-93521, https://access.redhat.com/security/cve/CVE-2026-93522, https://access.redhat.com/security/cve/CVE-2026-93523, https://bugzilla.redhat.com/2545161, https://bugzilla.redhat.com/2545164, https://bugzilla.redhat.com/2545174, https://bugzilla.redhat.com/2545177, https://bugzilla.redhat.com/2545178, https://bugzilla.redhat.com/2545246, https://bugzilla.redhat.com/2545860, https://bugzilla.redhat.com/2545887, https://bugzilla.redhat.com/2545908, https://errata.almalinux.org/9/ALSA-2026-85193.html

    Affected packages

    Package

    Name: xorg-x11-server-Xwayland

    Purl: pkg:rpm/almalinux/xorg-x11-server-Xwayland

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -24.1.9-4.el9_8.4

    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
    ALSA-2026:85193 | CVE-DB