{"action":"Upgrade xen to 4.20.4+39-gf1e1321c87-0+deb13u1 or later.","affected":[{"fixed":"4.20.4+39-gf1e1321c87-0+deb13u1","introduced":"0"}],"component":"xen","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["4.20.4+39-gf1e1321c87-0+deb13u1"],"id":"tcs_01M5NVMQTVHS8AC94P12JPS356","modified_at":"2026-10-23T18:05:44.815966867Z","published_at":"2026-10-13T16:17:23.347Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-79611","https://security-tracker.debian.org/tracker/CVE-2026-79611"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-79611#Debian:13/xen","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-79611"}],"summary":"For XSA-308 logic was introduced, as VMX VMEntry checks do not like the exact combination of state which occurs when #DB in intercepted, Single Stepping is active, and blocked by STI/MovSS is active,"}