{"action":"Upgrade xen to 4.6.6-r0 or later.","affected":[{"fixed":"4.6.6-r0","introduced":"0"}],"component":"xen","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.4","exploited":false,"fixed_versions":["4.6.6-r0"],"id":"tcs_01M5N8WZP0S82BSCS7A4X2D0FD","modified_at":"2026-06-15T18:18:06.728098617Z","published_at":"2017-07-05T01:29:00.860Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2017-10921","https://security.alpinelinux.org/vuln/CVE-2017-10921"],"severity":{"label":"critical","score":10},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2017-10921#Alpine:v3.4/xen","url":"https://osv.dev/vulnerability/ALPINE-CVE-2017-10921"}],"summary":"The grant-table feature in Xen through 4.8.x does not ensure sufficient type counts for a GNTMAP_device_map and GNTMAP_host_map mapping, which allows guest OS users to cause a denial of service (count"}