{"action":"Upgrade xen to 4.4.0-1 or later.","affected":[{"fixed":"4.4.0-1","introduced":"0"}],"component":"xen","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["4.4.0-1"],"id":"tcs_01M5NBT8SDAW7Q89M5705166SE","modified_at":"2026-09-22T07:00:12.659578598Z","published_at":"2017-01-23T21:59:02.800Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2016-9381","https://security-tracker.debian.org/tracker/CVE-2016-9381"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2016-9381#Debian:13/xen","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2016-9381"}],"summary":"Race condition in QEMU in Xen allows local x86 HVM guest OS administrators to gain privileges by changing certain data on shared rings, aka a \"double fetch\" vulnerability."}