{"action":"Upgrade xen to 4.9.0-r1 or later.","affected":[{"fixed":"4.9.0-r1","introduced":"0"}],"component":"xen","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.20","exploited":false,"fixed_versions":["4.9.0-r1"],"id":"tcs_01M5N90MATGXDWK7CPJ2JV2RHT","modified_at":"2026-06-15T18:18:06.764614561Z","published_at":"2017-08-15T16:29:00.233Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2017-12855","https://security.alpinelinux.org/vuln/CVE-2017-12855"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2017-12855#Alpine:v3.20/xen","url":"https://osv.dev/vulnerability/ALPINE-CVE-2017-12855"}],"summary":"Xen maintains the _GTF_{read,writ}ing bits as appropriate, to inform the guest that a grant is in use. A guest is expected not to modify the grant details while it is in use, whereas the guest is free"}