{"action":"Upgrade xen to 4.20.4+39-gf1e1321c87-1 or later.","affected":[{"fixed":"4.20.4+39-gf1e1321c87-1","introduced":"0"}],"component":"xen","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["4.20.4+39-gf1e1321c87-1"],"id":"tcs_01M5NVMPYCD9GE8990T73FQBK4","modified_at":"2026-10-23T18:05:44.816554955Z","published_at":"2026-10-13T16:17:23.147Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-79609","https://security-tracker.debian.org/tracker/CVE-2026-79609"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-79609#Debian:14/xen","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-79609"}],"summary":"XPTI (Xen Page Table Isolation) was introduced to mitigate Meltdown (CVE-2017-5754, one aspect of XSA-254). This involves copying 64-bit PV guest page table entries from guest-chosen root page tables"}