{"id":"ALSA-2026:82015","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: Privilege escalation via crafted RandR provider property requests (CVE-2026-93521)\n  * xorg-x11-server: xwayland: xorg-x11-server: Arbitrary code execution via double-free in XKB geometry handling (CVE-2026-88812)\n  * xorg-x11-server: xorg-x11-server: Out-of-bounds write via unvalidated modifier in ProcXIPassiveUngrabDevice (CVE-2026-93523)\n\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.\n","modified":"2026-10-14T12:57:02.501125140Z","published":"2026-10-13T00:00:00Z","related":["CVE-2026-88812","CVE-2026-93521","CVE-2026-93523"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:82015"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-88812"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-93521"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-93523"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2545164"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2545174"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2545177"},{"type":"ADVISORY","url":"https://errata.almalinux.org/9/ALSA-2026-82015.html"}],"affected":[{"package":{"name":"xorg-x11-server-Xdmx","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/xorg-x11-server-Xdmx"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.11-34.el9_8.4"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:82015.json"}},{"package":{"name":"xorg-x11-server-Xephyr","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/xorg-x11-server-Xephyr"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.11-34.el9_8.4"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:82015.json"}},{"package":{"name":"xorg-x11-server-Xnest","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/xorg-x11-server-Xnest"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.11-34.el9_8.4"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:82015.json"}},{"package":{"name":"xorg-x11-server-Xorg","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/xorg-x11-server-Xorg"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.11-34.el9_8.4"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:82015.json"}},{"package":{"name":"xorg-x11-server-Xvfb","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/xorg-x11-server-Xvfb"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.11-34.el9_8.4"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:82015.json"}},{"package":{"name":"xorg-x11-server-common","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/xorg-x11-server-common"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.11-34.el9_8.4"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:82015.json"}},{"package":{"name":"xorg-x11-server-devel","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/xorg-x11-server-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.11-34.el9_8.4"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:82015.json"}},{"package":{"name":"xorg-x11-server-source","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/xorg-x11-server-source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.11-34.el9_8.4"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:82015.json"}}],"schema_version":"1.9.0"}