{"action":"Upgrade xen to 4.8.2-r5 or later.","affected":[{"fixed":"4.8.2-r5","introduced":"0"}],"component":"xen","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.6","exploited":false,"fixed_versions":["4.8.2-r5"],"id":"tcs_01M5N9C58XTM9M5TATW2A30RW8","modified_at":"2026-06-15T18:24:31.121340724Z","published_at":"2017-12-12T23:29:00.300Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2017-17563","https://security.alpinelinux.org/vuln/CVE-2017-17563"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2017-17563#Alpine:v3.6/xen","url":"https://osv.dev/vulnerability/ALPINE-CVE-2017-17563"}],"summary":"An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging an incorrect mask for reference-count overflo"}