{"id":"DEBIAN-CVE-2026-50262","details":"An out-of-bounds read flaw was found in the X.Org X server and Xwayland in __glXDisp_ChangeDrawableAttributes(). A wrong size validation check can read a client-controlled number of bytes, exceeding the request buffer, leading to information disclosure. A write path also exists but requires byte-swapped clients which is disabled by default.","modified":"2026-09-01T16:06:48.592632709Z","published":"2026-06-05T12:16:39.770Z","upstream":["CVE-2026-50262"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-50262"}],"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+deb12u13"}]}],"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+deb12u12","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/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-50262.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+deb13u3"}]}],"versions":["2:21.1.16-1.3","2:21.1.16-1.3+deb13u1","2:21.1.16-1.3+deb13u2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-50262.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":"2:21.1.23-1"}]}],"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","2:21.1.22-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-50262.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/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-50262.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/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-50262.json"}},{"package":{"name":"xwayland","ecosystem":"Debian:14","purl":"pkg:deb/debian/xwayland?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:24.1.12-1"}]}],"versions":["2:24.1.10-1","2:24.1.11-1","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/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-50262.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:N/A:N"}]}