{"action":"Upgrade xen to 4.20.3+127-gc42374a105-0+deb13u1 or later.","affected":[{"fixed":"4.20.3+127-gc42374a105-0+deb13u1","introduced":"0"}],"component":"xen","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["4.20.3+127-gc42374a105-0+deb13u1"],"id":"tcs_01M5NS0NMAVXMAVZP86PYMTYA8","modified_at":"2026-10-04T22:00:06.683279775Z","published_at":"2026-07-28T13:18:32.247Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-42493","https://security-tracker.debian.org/tracker/CVE-2026-42493"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-42493#Debian:13/xen","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-42493"}],"summary":"Addressing certain issues, in particular related to operations which may take excessively long and therefore would need preemption, has turned out overly costly. Since alternatives (HVM/PVH: HAP, PV:"}