{"action":"Upgrade xen to 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 or later.","affected":[{"fixed":"4.8.3+comet2+shim4.10.0+comet3-1+deb9u5","introduced":"0"}],"component":"xen","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["4.8.3+comet2+shim4.10.0+comet3-1+deb9u5"],"id":"tcs_01M5NC9QK9V7XW6ZKT5J5PB3R3","modified_at":"2026-09-01T20:03:45.812655573Z","published_at":"2017-12-12T23:29:00.470Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2017-17565","https://security-tracker.debian.org/tracker/CVE-2017-17565"],"severity":{"label":"medium","score":5.6},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2017-17565","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2017-17565"}],"summary":"An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service (host OS crash) if shadow mode and log-dirty mode are in place, because of an incorrect assertion r"}