ALSA-2026:84574

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ALSA-2026:84574

Summary: Important: xorg-x11-server security update

Details: X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon. 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: 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-2026:84574, 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://bugzilla.redhat.com/2545161, 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-2026-84574.html