{"id":"DEBIAN-CVE-2026-34003","details":"A 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.","modified":"2026-09-14T17:03:30.337515556Z","published":"2026-04-23T16:16:24.920Z","upstream":["CVE-2026-34003"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-34003"}],"affected":[{"package":{"name":"xorg-server","ecosystem":"Debian:12","purl":"pkg:deb/debian/xorg-server?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:21.1.7-3+deb12u12"}]}],"versions":["2:21.1.7-3","2:21.1.7-3+deb12u1","2:21.1.7-3+deb12u10","2:21.1.7-3+deb12u11","2:21.1.7-3+deb12u2","2:21.1.7-3+deb12u3","2:21.1.7-3+deb12u4","2:21.1.7-3+deb12u5","2:21.1.7-3+deb12u6","2:21.1.7-3+deb12u7","2:21.1.7-3+deb12u8","2:21.1.7-3+deb12u9"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34003.json"}},{"package":{"name":"xorg-server","ecosystem":"Debian:13","purl":"pkg:deb/debian/xorg-server?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:21.1.16-1.3+deb13u2"}]}],"versions":["2:21.1.16-1.3","2:21.1.16-1.3+deb13u1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34003.json"}},{"package":{"name":"xorg-server","ecosystem":"Debian:14","purl":"pkg:deb/debian/xorg-server?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:21.1.22-1"}]}],"versions":["2:21.1.16-1.3","2:21.1.18-1","2:21.1.18-2","2:21.1.20-1","2:21.1.21-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34003.json"}},{"package":{"name":"xwayland","ecosystem":"Debian:12","purl":"pkg:deb/debian/xwayland?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:22.1.9-1","2:23.1.0-1","2:23.1.1-1","2:23.2.0-1","2:23.2.1-1","2:23.2.2-1","2:23.2.3-1","2:23.2.4-1","2:23.2.6-1","2:24.0.99.901-1","2:24.1.0-1","2:24.1.10-1","2:24.1.11-1","2:24.1.12-1","2:24.1.13-1","2:24.1.2-1","2:24.1.3-1","2:24.1.4-1","2:24.1.4-2","2:24.1.4-3","2:24.1.5-1","2:24.1.6-1","2:24.1.8-1","2:24.1.9-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34003.json"}},{"package":{"name":"xwayland","ecosystem":"Debian:13","purl":"pkg:deb/debian/xwayland?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:24.1.10-1","2:24.1.11-1","2:24.1.12-1","2:24.1.13-1","2:24.1.6-1","2:24.1.8-1","2:24.1.9-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34003.json"}},{"package":{"name":"xwayland","ecosystem":"Debian:14","purl":"pkg:deb/debian/xwayland?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:24.1.10-1"}]}],"versions":["2:24.1.6-1","2:24.1.8-1","2:24.1.9-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34003.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}