{"id":"CLSA-2026-1790584501","summary":"xorg-x11-server: Fix of 6 CVEs","details":"- CVE-2026-50262: fix reversed request length check in GLX\n  ChangeDrawableAttributes leading to out-of-bounds read/write\n- CVE-2026-50263: fix use-after-free of the screen private in ScreenSaver\n  CreateSaverWindow() after CheckScreenPrivate()\n- CVE-2026-55999: fix heap buffer overflow in glamor_font_get() on fonts with\n  per-glyph metrics exceeding maxbounds","modified":"2026-10-26T09:31:59.077631299Z","published":"2026-10-17T02:45:55Z","upstream":["CVE-2026-50262","CVE-2026-50263","CVE-2026-55999"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/rhel7els/CLSA-2026-1790584501.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33999"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34001"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34003"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50262"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50263"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55999"}],"affected":[{"package":{"name":"xorg-x11-server-Xdmx","ecosystem":"TuxCare:RHEL:7","purl":"pkg:rpm/tuxcare/xorg-x11-server-Xdmx?distro=rhel-7"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.4-99.el7_9.tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1790584501.json"}},{"package":{"name":"xorg-x11-server-Xephyr","ecosystem":"TuxCare:RHEL:7","purl":"pkg:rpm/tuxcare/xorg-x11-server-Xephyr?distro=rhel-7"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.4-99.el7_9.tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1790584501.json"}},{"package":{"name":"xorg-x11-server-Xnest","ecosystem":"TuxCare:RHEL:7","purl":"pkg:rpm/tuxcare/xorg-x11-server-Xnest?distro=rhel-7"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.4-99.el7_9.tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1790584501.json"}},{"package":{"name":"xorg-x11-server-Xorg","ecosystem":"TuxCare:RHEL:7","purl":"pkg:rpm/tuxcare/xorg-x11-server-Xorg?distro=rhel-7"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.4-99.el7_9.tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1790584501.json"}},{"package":{"name":"xorg-x11-server-Xvfb","ecosystem":"TuxCare:RHEL:7","purl":"pkg:rpm/tuxcare/xorg-x11-server-Xvfb?distro=rhel-7"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.4-99.el7_9.tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1790584501.json"}},{"package":{"name":"xorg-x11-server-Xwayland","ecosystem":"TuxCare:RHEL:7","purl":"pkg:rpm/tuxcare/xorg-x11-server-Xwayland?distro=rhel-7"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.4-99.el7_9.tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1790584501.json"}},{"package":{"name":"xorg-x11-server-common","ecosystem":"TuxCare:RHEL:7","purl":"pkg:rpm/tuxcare/xorg-x11-server-common?distro=rhel-7"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.4-99.el7_9.tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1790584501.json"}},{"package":{"name":"xorg-x11-server-devel","ecosystem":"TuxCare:RHEL:7","purl":"pkg:rpm/tuxcare/xorg-x11-server-devel?distro=rhel-7"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.4-99.el7_9.tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1790584501.json"}},{"package":{"name":"xorg-x11-server-source","ecosystem":"TuxCare:RHEL:7","purl":"pkg:rpm/tuxcare/xorg-x11-server-source?distro=rhel-7"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.4-99.el7_9.tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1790584501.json"}}],"schema_version":"1.9.0"}