{"action":"Upgrade xorg-server to 2:21.1.7-3+deb12u13 or later.","affected":[{"fixed":"2:21.1.7-3+deb12u13","introduced":"0"}],"component":"xorg-server","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["2:21.1.7-3+deb12u13"],"id":"tcs_01M5NSPMSFT520QQ6N40CTXZZZ","modified_at":"2026-10-01T03:03:16.663702188Z","published_at":"2026-06-05T12:16:39.070Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-50258","https://security-tracker.debian.org/tracker/CVE-2026-50258"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-50258","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-50258"}],"summary":"A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. The X server has multiple stack buffers sized XkbMaxShiftLevel * XkbNumKbdGroups but CheckKeyTypes() does not verify or"}