{"id":"RLSA-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.\n\nSecurity Fix(es):\n\n* xorg-x11-server: xorg-x11-server: Arbitrary code execution via use-after-free in passive grab handling (CVE-2026-93516)\n\n* xorg-x11-server: xorg-x11-server: arbitrary code execution via GLX RenderLarge heap-based buffer overflow (CVE-2026-93517)\n\n* xorg-x11-server: xorg-x11-server: arbitrary code execution via integer truncation during keyboard mapping resize (CVE-2026-93518)\n\n* xorg-x11-server: xorg-x11-server: Arbitrary code execution via buffer overflow in input_constrain_cursor() (CVE-2026-93519)\n\n* xorg-x11-server: xorg-x11-server: arbitrary code execution via out-of-bounds write in XKB keycode handling (CVE-2026-93520)\n\nFor 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.","modified":"2026-10-20T12:15:37.442184744Z","published":"2026-10-20T12:05:07.452289Z","upstream":["CVE-2026-93516","CVE-2026-93517","CVE-2026-93518","CVE-2026-93519","CVE-2026-93520"],"database_specific":{"license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:84574","license":"CC-BY-4.0"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:84574"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545161"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545246"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545860"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545887"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545908"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:84574"}],"affected":[{"package":{"name":"xorg-x11-server","ecosystem":"Rocky Linux:9","purl":"pkg:rpm/rocky-linux/xorg-x11-server?distro=rocky-linux-9&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.20.11-34.el9_8.5"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:84574.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}