{"action":"Upgrade xen to 4.14.0+80-gd101b417b7-1 or later.","affected":[{"fixed":"4.14.0+80-gd101b417b7-1","introduced":"0"}],"component":"xen","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["4.14.0+80-gd101b417b7-1"],"id":"tcs_01M5NEVRXSQGTSRC17DX4KFCE8","modified_at":"2026-09-11T11:02:28.953874308Z","published_at":"2020-09-23T22:15:13.853Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2020-25603","https://security-tracker.debian.org/tracker/CVE-2020-25603"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2020-25603#Debian:14/xen","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2020-25603"}],"summary":"An issue was discovered in Xen through 4.14.x. There are missing memory barriers when accessing/allocating an event channel. Event channels control structures can be accessed lockless as long as the p"}