{"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:13","exploited":false,"fixed_versions":["4.8.0~rc3-1"],"id":"tcs_01M5NBJB2ER8SBFGW82XGQW080","modified_at":"2026-09-22T07:00:43.804683794Z","published_at":"2016-04-13T16:59:18.350Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2016-3158","https://security-tracker.debian.org/tracker/CVE-2016-3158"],"severity":{"label":"low","score":3.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2016-3158#Debian:13/xen","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2016-3158"}],"summary":"The xrstor function in arch/x86/xstate.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 sensitive r"}