{"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_01M5NBJB7C7HQ5C9V1SWGSGK8Q","modified_at":"2026-09-22T07:00:42.495074015Z","published_at":"2016-04-13T16:59:19.507Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2016-3159","https://security-tracker.debian.org/tracker/CVE-2016-3159"],"severity":{"label":"low","score":3.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2016-3159","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2016-3159"}],"summary":"The fpu_fxrstor function in arch/x86/i387.c in Xen 4.x does not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allows local guest OS users to obtain sensitiv"}