{"schema_version":"1.7.2","id":"OESA-2026-3026","modified":"2026-07-19T03:48:02Z","published":"2026-07-19T03:48:02Z","upstream":["CVE-2026-55999"],"summary":"xorg-x11-server security update","details":"X.Org X11 X server\r\n\r\nSecurity Fix(es):\n\nLocal attackers with a X connection able to provide PCX fonts to the X \nserver xorg-server before 21.2.24 and xwayland before 24.1.13 could \ncause a heap buffer overflow via SetFont due to missing glyph boundary checks.(CVE-2026-55999)","affected":[{"package":{"ecosystem":"openEuler:22.03-LTS-SP4","name":"xorg-x11-server","purl":"pkg:rpm/openEuler/xorg-x11-server&distro=openEuler-22.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.11-45.oe2203sp4"}]}],"ecosystem_specific":{"aarch64":["xorg-x11-server-1.20.11-45.oe2203sp4.aarch64.rpm","xorg-x11-server-Xdmx-1.20.11-45.oe2203sp4.aarch64.rpm","xorg-x11-server-Xephyr-1.20.11-45.oe2203sp4.aarch64.rpm","xorg-x11-server-Xnest-1.20.11-45.oe2203sp4.aarch64.rpm","xorg-x11-server-Xvfb-1.20.11-45.oe2203sp4.aarch64.rpm","xorg-x11-server-common-1.20.11-45.oe2203sp4.aarch64.rpm","xorg-x11-server-debuginfo-1.20.11-45.oe2203sp4.aarch64.rpm","xorg-x11-server-debugsource-1.20.11-45.oe2203sp4.aarch64.rpm","xorg-x11-server-devel-1.20.11-45.oe2203sp4.aarch64.rpm"],"noarch":["xorg-x11-server-help-1.20.11-45.oe2203sp4.noarch.rpm","xorg-x11-server-source-1.20.11-45.oe2203sp4.noarch.rpm"],"src":["xorg-x11-server-1.20.11-45.oe2203sp4.src.rpm"],"x86_64":["xorg-x11-server-1.20.11-45.oe2203sp4.x86_64.rpm","xorg-x11-server-Xdmx-1.20.11-45.oe2203sp4.x86_64.rpm","xorg-x11-server-Xephyr-1.20.11-45.oe2203sp4.x86_64.rpm","xorg-x11-server-Xnest-1.20.11-45.oe2203sp4.x86_64.rpm","xorg-x11-server-Xvfb-1.20.11-45.oe2203sp4.x86_64.rpm","xorg-x11-server-common-1.20.11-45.oe2203sp4.x86_64.rpm","xorg-x11-server-debuginfo-1.20.11-45.oe2203sp4.x86_64.rpm","xorg-x11-server-debugsource-1.20.11-45.oe2203sp4.x86_64.rpm","xorg-x11-server-devel-1.20.11-45.oe2203sp4.x86_64.rpm"]}},{"package":{"ecosystem":"openEuler:24.03-LTS-SP1","name":"xorg-x11-server","purl":"pkg:rpm/openEuler/xorg-x11-server&distro=openEuler-24.03-LTS-SP1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.11-46.oe2403sp1"}]}],"ecosystem_specific":{"aarch64":["xorg-x11-server-1.20.11-46.oe2403sp1.aarch64.rpm","xorg-x11-server-Xdmx-1.20.11-46.oe2403sp1.aarch64.rpm","xorg-x11-server-Xephyr-1.20.11-46.oe2403sp1.aarch64.rpm","xorg-x11-server-Xnest-1.20.11-46.oe2403sp1.aarch64.rpm","xorg-x11-server-Xvfb-1.20.11-46.oe2403sp1.aarch64.rpm","xorg-x11-server-common-1.20.11-46.oe2403sp1.aarch64.rpm","xorg-x11-server-debuginfo-1.20.11-46.oe2403sp1.aarch64.rpm","xorg-x11-server-debugsource-1.20.11-46.oe2403sp1.aarch64.rpm","xorg-x11-server-devel-1.20.11-46.oe2403sp1.aarch64.rpm"],"noarch":["xorg-x11-server-help-1.20.11-46.oe2403sp1.noarch.rpm","xorg-x11-server-source-1.20.11-46.oe2403sp1.noarch.rpm"],"src":["xorg-x11-server-1.20.11-46.oe2403sp1.src.rpm"],"x86_64":["xorg-x11-server-1.20.11-46.oe2403sp1.x86_64.rpm","xorg-x11-server-Xdmx-1.20.11-46.oe2403sp1.x86_64.rpm","xorg-x11-server-Xephyr-1.20.11-46.oe2403sp1.x86_64.rpm","xorg-x11-server-Xnest-1.20.11-46.oe2403sp1.x86_64.rpm","xorg-x11-server-Xvfb-1.20.11-46.oe2403sp1.x86_64.rpm","xorg-x11-server-common-1.20.11-46.oe2403sp1.x86_64.rpm","xorg-x11-server-debuginfo-1.20.11-46.oe2403sp1.x86_64.rpm","xorg-x11-server-debugsource-1.20.11-46.oe2403sp1.x86_64.rpm","xorg-x11-server-devel-1.20.11-46.oe2403sp1.x86_64.rpm"]}},{"package":{"ecosystem":"openEuler:24.03-LTS-SP3","name":"xorg-x11-server","purl":"pkg:rpm/openEuler/xorg-x11-server&distro=openEuler-24.03-LTS-SP3"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.11-46.oe2403sp3"}]}],"ecosystem_specific":{"aarch64":["xorg-x11-server-1.20.11-46.oe2403sp3.aarch64.rpm","xorg-x11-server-Xdmx-1.20.11-46.oe2403sp3.aarch64.rpm","xorg-x11-server-Xephyr-1.20.11-46.oe2403sp3.aarch64.rpm","xorg-x11-server-Xnest-1.20.11-46.oe2403sp3.aarch64.rpm","xorg-x11-server-Xvfb-1.20.11-46.oe2403sp3.aarch64.rpm","xorg-x11-server-common-1.20.11-46.oe2403sp3.aarch64.rpm","xorg-x11-server-debuginfo-1.20.11-46.oe2403sp3.aarch64.rpm","xorg-x11-server-debugsource-1.20.11-46.oe2403sp3.aarch64.rpm","xorg-x11-server-devel-1.20.11-46.oe2403sp3.aarch64.rpm"],"noarch":["xorg-x11-server-help-1.20.11-46.oe2403sp3.noarch.rpm","xorg-x11-server-source-1.20.11-46.oe2403sp3.noarch.rpm"],"src":["xorg-x11-server-1.20.11-46.oe2403sp3.src.rpm"],"x86_64":["xorg-x11-server-1.20.11-46.oe2403sp3.x86_64.rpm","xorg-x11-server-Xdmx-1.20.11-46.oe2403sp3.x86_64.rpm","xorg-x11-server-Xephyr-1.20.11-46.oe2403sp3.x86_64.rpm","xorg-x11-server-Xnest-1.20.11-46.oe2403sp3.x86_64.rpm","xorg-x11-server-Xvfb-1.20.11-46.oe2403sp3.x86_64.rpm","xorg-x11-server-common-1.20.11-46.oe2403sp3.x86_64.rpm","xorg-x11-server-debuginfo-1.20.11-46.oe2403sp3.x86_64.rpm","xorg-x11-server-debugsource-1.20.11-46.oe2403sp3.x86_64.rpm","xorg-x11-server-devel-1.20.11-46.oe2403sp3.x86_64.rpm"]}},{"package":{"ecosystem":"openEuler:24.03-LTS-SP4","name":"xorg-x11-server","purl":"pkg:rpm/openEuler/xorg-x11-server&distro=openEuler-24.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.11-46.oe2403sp4"}]}],"ecosystem_specific":{"aarch64":["xorg-x11-server-1.20.11-46.oe2403sp4.aarch64.rpm","xorg-x11-server-Xdmx-1.20.11-46.oe2403sp4.aarch64.rpm","xorg-x11-server-Xephyr-1.20.11-46.oe2403sp4.aarch64.rpm","xorg-x11-server-Xnest-1.20.11-46.o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