{"schema_version":"1.7.2","id":"OESA-2026-2139","modified":"2026-05-03T09:55:50Z","published":"2026-05-03T09:55:50Z","upstream":["CVE-2026-33999","CVE-2026-34000","CVE-2026-34001","CVE-2026-34002","CVE-2026-34003"],"summary":"xorg-x11-server security update","details":"X.Org X11 X server\r\n\r\nSecurity Fix(es):\n\nA flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. This can lead to memory-safety violations and potentially a denial of service (DoS) or other severe impacts.(CVE-2026-33999)\n\n(CVE-2026-34000)\n\nA flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence() function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially enabling memory corruption. This could result in a denial of service or further compromise of the system.(CVE-2026-34001)\n\n(CVE-2026-34002)\n\nA flaw was found in the X.Org X server's XKB key types request validation. A local attacker could send a specially crafted request to the X server, leading to an out-of-bounds memory access vulnerability. This could result in the disclosure of sensitive information or cause the server to crash, leading to a Denial of Service (DoS). In certain configurations, higher impact outcomes may be possible.(CVE-2026-34003)","affected":[{"package":{"ecosystem":"openEuler:24.03-LTS","name":"xorg-x11-server","purl":"pkg:rpm/openEuler/xorg-x11-server&distro=openEuler-24.03-LTS"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.11-44.oe2403sp3"}]}],"ecosystem_specific":{"aarch64":["xorg-x11-server-1.20.11-44.oe2403.aarch64.rpm","xorg-x11-server-Xdmx-1.20.11-44.oe2403.aarch64.rpm","xorg-x11-server-Xephyr-1.20.11-44.oe2403.aarch64.rpm","xorg-x11-server-Xnest-1.20.11-44.oe2403.aarch64.rpm","xorg-x11-server-Xvfb-1.20.11-44.oe2403.aarch64.rpm","xorg-x11-server-common-1.20.11-44.oe2403.aarch64.rpm","xorg-x11-server-debuginfo-1.20.11-44.oe2403.aarch64.rpm","xorg-x11-server-debugsource-1.20.11-44.oe2403.aarch64.rpm","xorg-x11-server-devel-1.20.11-44.oe2403.aarch64.rpm","xorg-x11-server-1.20.11-44.oe2403sp1.aarch64.rpm","xorg-x11-server-Xdmx-1.20.11-44.oe2403sp1.aarch64.rpm","xorg-x11-server-Xephyr-1.20.11-44.oe2403sp1.aarch64.rpm","xorg-x11-server-Xnest-1.20.11-44.oe2403sp1.aarch64.rpm","xorg-x11-server-Xvfb-1.20.11-44.oe2403sp1.aarch64.rpm","xorg-x11-server-common-1.20.11-44.oe2403sp1.aarch64.rpm","xorg-x11-server-debuginfo-1.20.11-44.oe2403sp1.aarch64.rpm","xorg-x11-server-debugsource-1.20.11-44.oe2403sp1.aarch64.rpm","xorg-x11-server-devel-1.20.11-44.oe2403sp1.aarch64.rpm","xorg-x11-server-1.20.11-44.oe2403sp3.aarch64.rpm","xorg-x11-server-Xdmx-1.20.11-44.oe2403sp3.aarch64.rpm","xorg-x11-server-Xephyr-1.20.11-44.oe2403sp3.aarch64.rpm","xorg-x11-server-Xnest-1.20.11-44.oe2403sp3.aarch64.rpm","xorg-x11-server-Xvfb-1.20.11-44.oe2403sp3.aarch64.rpm","xorg-x11-server-common-1.20.11-44.oe2403sp3.aarch64.rpm","xorg-x11-server-debuginfo-1.20.11-44.oe2403sp3.aarch64.rpm","xorg-x11-server-debugsource-1.20.11-44.oe2403sp3.aarch64.rpm","xorg-x11-server-devel-1.20.11-44.oe2403sp3.aarch64.rpm"],"noarch":["xorg-x11-server-help-1.20.11-44.oe2403.noarch.rpm","xorg-x11-server-source-1.20.11-44.oe2403.noarch.rpm","xorg-x11-server-help-1.20.11-44.oe2403sp1.noarch.rpm","xorg-x11-server-source-1.20.11-44.oe2403sp1.noarch.rpm","xorg-x11-server-help-1.20.11-44.oe2403sp3.noarch.rpm","xorg-x11-server-source-1.20.11-44.oe2403sp3.noarch.rpm"],"src":["xorg-x11-server-1.20.11-44.oe2403.src.rpm","xorg-x11-server-1.20.11-44.oe2403sp1.src.rpm","xorg-x11-server-1.20.11-44.oe2403sp3.src.rpm"],"x86_64":["xorg-x11-server-1.20.11-44.oe2403.x86_64.rpm","xorg-x11-server-Xdmx-1.20.11-44.oe2403.x86_64.rpm","xorg-x11-server-Xephyr-1.20.11-44.oe2403.x86_64.rpm","xorg-x11-server-Xnest-1.20.11-44.oe2403.x86_64.rpm","xorg-x11-server-Xvfb-1.20.11-44.oe2403.x86_64.rpm","xorg-x11-server-common-1.20.11-44.oe2403.x86_64.rpm","xorg-x11-server-debuginfo-1.20.11-44.oe2403.x86_64.rpm","xorg-x11-server-debugsource-1.20.11-44.oe2403.x86_64.rpm","xorg-x11-server-devel-1.20.11-44.oe2403.x86_64.rpm","xorg-x11-server-1.20.11-44.oe2403sp1.x86_64.rpm","xorg-x11-server-Xdmx-1.20.11-44.oe2403sp1.x86_64.rpm","xorg-x11-server-Xephyr-1.20.11-44.oe2403sp1.x86_64.rpm","xorg-x11-server-Xnest-1.20.11-44.oe2403sp1.x86_64.rpm","xorg-x11-server-Xvfb-1.20.11-44.oe2403sp1.x86_64.rpm","xorg-x11-server-common-1.20.11-44.oe2403sp1.x86_64.rpm","xorg-x11-server-debuginfo-1.20.11-44.oe2403sp1.x86_64.rpm","xorg-x11-server-debugsource-1.20.11-44.oe2403sp1.x86_64.rpm","xorg-x11-server-devel-1.20.11-44.oe2403sp1.x86_64.rpm","xorg-x11-server-1.20.11-44.oe2403sp3.x86_64.rpm","xorg-x11-server-Xdmx-1.20.11-44.oe2403sp3.x86_64.rpm","xorg-x11-server-Xephyr-1.20.11-44.oe2403sp3.x86_64.rpm","xorg-x11-server-Xnest-1.20.11-44.oe2403sp3.x86_64.rpm","xorg-x11-server-Xvfb-1.20.11-44.oe2403sp3.x86_64.rpm","xorg-x11-server-common-1.20.11-44.oe2403sp3.x86_64.rpm","xorg-x11-server-debuginfo-1.20.11-44.oe2403sp3.x86_64.rpm","xorg-x11-server-debugsource-1.20.11-44.oe2403sp3.x86_64.rpm","xorg-x11-server-devel-1.20.11-44.oe2403sp3.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":"1.20.11-44.oe2403sp1"}]}],"ecosystem_specific":{"aarch64":["xorg-x11-server-1.20.11-44.oe2403sp1.aarch64.rpm","xorg-x11-server-Xdmx-1.20.11-44.oe2403sp1.aarch64.rpm","xorg-x11-server-Xephyr-1.20.11-44.oe2403sp1.aarch64.rpm","xorg-x11-server-Xnest-1.20.11-44.oe2403sp1.aarch64.rpm","xorg-x11-server-Xvfb-1.20.11-44.oe2403sp1.aarch64.rpm","xorg-x11-server-common-1.20.11-44.oe2403sp1.aarch64.rpm","xorg-x11-server-debuginfo-1.20.11-44.oe2403sp1.aarch64.rpm","xorg-x11-server-debugsource-1.20.11-44.oe2403sp1.aarch64.rpm","xorg-x11-server-devel-1.20.11-44.oe2403sp1.aarch64.rpm"],"noarch":["xorg-x11-server-help-1.20.11-44.oe2403sp1.noarch.rpm","xorg-x11-server-source-1.20.11-44.oe2403sp1.noarch.rpm"],"src":["xorg-x11-server-1.20.11-44.oe2403sp1.src.rpm"],"x86_64":["xorg-x11-server-1.20.11-44.oe2403sp1.x86_64.rpm","xorg-x11-server-Xdmx-1.20.11-44.oe2403sp1.x86_64.rpm","xorg-x11-server-Xephyr-1.20.11-44.oe2403sp1.x86_64.rpm","xorg-x11-server-Xnest-1.20.11-44.oe2403sp1.x86_64.rpm","xorg-x11-server-Xvfb-1.20.11-44.oe2403sp1.x86_64.rpm","xorg-x11-server-common-1.20.11-44.oe2403sp1.x86_64.rpm","xorg-x11-server-debuginfo-1.20.11-44.oe2403sp1.x86_64.rpm","xorg-x11-server-debugsource-1.20.11-44.oe2403sp1.x86_64.rpm","xorg-x11-server-devel-1.20.11-44.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":"1.20.11-44.oe2403sp3"}]}],"ecosystem_specific":{"aarch64":["xorg-x11-server-1.20.11-44.oe2403sp3.aarch64.rpm","xorg-x11-server-Xdmx-1.20.11-44.oe2403sp3.aarch64.rpm","xorg-x11-server-Xephyr-1.20.11-44.oe2403sp3.aarch64.rpm","xorg-x11-server-Xnest-1.20.11-44.oe2403sp3.aarch64.rpm","xorg-x11-server-Xvfb-1.20.11-44.oe2403sp3.aarch64.rpm","xorg-x11-server-common-1.20.11-44.oe2403sp3.aarch64.rpm","xorg-x11-server-debuginfo-1.20.11-44.oe2403sp3.aarch64.rpm","xorg-x11-server-debugsource-1.20.11-44.oe2403sp3.aarch64.rpm","xorg-x11-server-devel-1.20.11-44.oe2403sp3.aarch64.rpm"],"noarch":["xorg-x11-server-help-1.20.11-44.oe2403sp3.noarch.rpm","xorg-x11-server-source-1.20.11-44.oe2403sp3.noarch.rpm"],"src":["xorg-x11-server-1.20.11-44.oe2403sp3.src.rpm"],"x86_64":["xorg-x11-server-1.20.11-44.oe2403sp3.x86_64.rpm","xorg-x11-server-Xdmx-1.20.11-44.oe2403sp3.x86_64.rpm","xorg-x11-server-Xephyr-1.20.11-44.oe2403sp3.x86_64.rpm","xorg-x11-server-Xnest-1.20.11-44.oe2403sp3.x86_64.rpm","xorg-x11-server-Xvfb-1.20.11-44.oe2403sp3.x86_64.rpm","xorg-x11-server-common-1.20.11-44.oe2403sp3.x86_64.rpm","xorg-x11-server-debuginfo-1.20.11-44.oe2403sp3.x86_64.rpm","xorg-x11-server-debugsource-1.20.11-44.oe2403sp3.x86_64.rpm","xorg-x11-server-devel-1.20.11-44.oe2403sp3.x86_64.rpm"]}},{"package":{"ecosystem":"openEuler:20.03-LTS-SP4","name":"xorg-x11-server","purl":"pkg:rpm/openEuler/xorg-x11-server&distro=openEuler-20.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.8-37.oe2003sp4"}]}],"ecosystem_specific":{"aarch64":["xorg-x11-server-1.20.8-37.oe2003sp4.aarch64.rpm","xorg-x11-server-Xephyr-1.20.8-37.oe2003sp4.aarch64.rpm","xorg-x11-server-debuginfo-1.20.8-37.oe2003sp4.aarch64.rpm","xorg-x11-server-debugsource-1.20.8-37.oe2003sp4.aarch64.rpm","xorg-x11-server-devel-1.20.8-37.oe2003sp4.aarch64.rpm"],"noarch":["xorg-x11-server-help-1.20.8-37.oe2003sp4.noarch.rpm"],"src":["xorg-x11-server-1.20.8-37.oe2003sp4.src.rpm"],"x86_64":["xorg-x11-server-1.20.8-37.oe2003sp4.x86_64.rpm","xorg-x11-server-Xephyr-1.20.8-37.oe2003sp4.x86_64.rpm","xorg-x11-server-debuginfo-1.20.8-37.oe2003sp4.x86_64.rpm","xorg-x11-server-debugsource-1.20.8-37.oe2003sp4.x86_64.rpm","xorg-x11-server-devel-1.20.8-37.oe2003sp4.x86_64.rpm"]}},{"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":"1.20.11-43.oe2203sp4"}]}],"ecosystem_specific":{"aarch64":["xorg-x11-server-1.20.11-43.oe2203sp4.aarch64.rpm","xorg-x11-server-Xdmx-1.20.11-43.oe2203sp4.aarch64.rpm","xorg-x11-server-Xephyr-1.20.11-43.oe2203sp4.aarch64.rpm","xorg-x11-server-Xnest-1.20.11-43.oe2203sp4.aarch64.rpm","xorg-x11-server-Xvfb-1.20.11-43.oe2203sp4.aarch64.rpm","xorg-x11-server-common-1.20.11-43.oe2203sp4.aarch64.rpm","xorg-x11-server-debuginfo-1.20.11-43.oe2203sp4.aarch64.rpm","xorg-x11-server-debugsource-1.20.11-43.oe2203sp4.aarch64.rpm","xorg-x11-server-devel-1.20.11-43.oe2203sp4.aarch64.rpm"],"noarch":["xorg-x11-server-help-1.20.11-43.oe2203sp4.noarch.rpm","xorg-x11-server-source-1.20.11-43.oe2203sp4.noarch.rpm"],"src":["xorg-x11-server-1.20.11-43.oe2203sp4.src.rpm"],"x86_64":["xorg-x11-server-1.20.11-43.oe2203sp4.x86_64.rpm","xorg-x11-server-Xdmx-1.20.11-43.oe2203sp4.x86_64.rpm","xorg-x11-server-Xephyr-1.20.11-43.oe2203sp4.x86_64.rpm","xorg-x11-server-Xnest-1.20.11-43.oe2203sp4.x86_64.rpm","xorg-x11-server-Xvfb-1.20.11-43.oe2203sp4.x86_64.rpm","xorg-x11-server-common-1.20.11-43.oe2203sp4.x86_64.rpm","xorg-x11-server-debuginfo-1.20.11-43.oe2203sp4.x86_64.rpm","xorg-x11-server-debugsource-1.20.11-43.oe2203sp4.x86_64.rpm","xorg-x11-server-devel-1.20.11-43.oe2203sp4.x86_64.rpm"]}}],"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2139"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33999"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34000"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34001"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34002"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34003"}],"database_specific":{"severity":"High"}}