{"action":"Upgrade xwayland to 21.1.4-r0 or later.","affected":[{"fixed":"21.1.4-r0","introduced":"0"}],"component":"xwayland","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.21","exploited":false,"fixed_versions":["21.1.4-r0"],"id":"tcs_01M6GW8C697WDPCJPBXY43CFFA","modified_at":"2026-11-03T06:32:41.208296745Z","published_at":"2021-12-17T17:15:13.530Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2021-4011","https://security.alpinelinux.org/vuln/CVE-2021-4011"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2021-4011#Alpine:v3.21/xwayland","url":"https://osv.dev/vulnerability/ALPINE-CVE-2021-4011"}],"summary":"A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SwapCreateRegister function. The highest threat from this vulnerability is to"}