{"id":"RLSA-2026:11692","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: xwayland: X.Org X server: Denial of Service via integer underflow in XKB compatibility map handling (CVE-2026-33999)\n\n* xorg: xwayland: X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption (CVE-2026-34001)\n\n* xorg: xwayland: X.Org X server: Information exposure and denial of service via out-of-bounds memory access (CVE-2026-34003)\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":"2026-04-30T18:27:25.048196Z","published":"2026-04-30T18:01:05.380956Z","upstream":["CVE-2026-33999","CVE-2026-34001","CVE-2026-34003"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:11692"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2451106"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2451109"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2451113"}],"affected":[{"package":{"name":"xorg-x11-server","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/xorg-x11-server?distro=rocky-linux-8&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.20.11-28.el8_10"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:11692.json"}}],"schema_version":"1.7.5","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"}]}