{"id":"ALSA-2026:38490","summary":"Important: xorg-x11-server-Xwayland security update","details":"Xwayland is an X server for running X clients under Wayland.  \n\nSecurity Fix(es):  \n\n  * xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer Overflow (CVE-2026-55999)\n  * X.org: xorg-x11-server: GLX contextTags Use-After-Free in CommonMakeCurrent() (CVE-2026-56000)\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":"2026-08-12T14:30:03.400679157Z","published":"2026-07-13T00:00:00Z","related":["CVE-2026-55999","CVE-2026-56000"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:38490"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-55999"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-56000"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2496165"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2496193"},{"type":"ADVISORY","url":"https://errata.almalinux.org/9/ALSA-2026-38490.html"}],"affected":[{"package":{"name":"xorg-x11-server-Xwayland","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/xorg-x11-server-Xwayland"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"24.1.9-4.el9_8.3"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:38490.json"}},{"package":{"name":"xorg-x11-server-Xwayland-devel","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/xorg-x11-server-Xwayland-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"24.1.9-4.el9_8.3"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:38490.json"}}],"schema_version":"1.9.0"}