{"action":"Upgrade xen to 4.8.0~rc3-1 or later.","affected":[{"fixed":"4.8.0~rc3-1","introduced":"0"}],"component":"xen","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["4.8.0~rc3-1"],"id":"tcs_01M5NBB1XTQJNTB70650WCKKAE","modified_at":"2026-09-09T07:01:55.621065139Z","published_at":"2016-04-13T15:59:08.290Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2015-8555","https://security-tracker.debian.org/tracker/CVE-2015-8555"],"severity":{"label":"high","score":8.6},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2015-8555","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2015-8555"}],"summary":"Xen 4.6.x, 4.5.x, 4.4.x, 4.3.x, and earlier do not initialize x86 FPU stack and XMM registers when XSAVE/XRSTOR are not used to manage guest extended register state, which allows local guest domains t"}