{"action":"Upgrade xen to 4.9.0-r0 or later.","affected":[{"fixed":"4.9.0-r0","introduced":"0"}],"component":"xen","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.17","exploited":false,"fixed_versions":["4.9.0-r0"],"id":"tcs_01M5N8WTRDKTY98XWR7G4DNF2B","modified_at":"2026-06-15T18:18:06.727375791Z","published_at":"2017-07-05T01:29:00.830Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2017-10920","https://security.alpinelinux.org/vuln/CVE-2017-10920"],"severity":{"label":"critical","score":10},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2017-10920#Alpine:v3.17/xen","url":"https://osv.dev/vulnerability/ALPINE-CVE-2017-10920"}],"summary":"The grant-table feature in Xen through 4.8.x mishandles a GNTMAP_device_map and GNTMAP_host_map mapping, when followed by only a GNTMAP_host_map unmapping, which allows guest OS users to cause a denia"}