{"action":"Upgrade xen to 4.20.3+127-gc42374a105-1 or later.","affected":[{"fixed":"4.20.3+127-gc42374a105-1","introduced":"0"}],"component":"xen","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["4.20.3+127-gc42374a105-1"],"id":"tcs_01M5NT8HHT49CYN85TSBZ75QWH","modified_at":"2026-10-04T22:00:09.135313497Z","published_at":"2026-07-28T13:19:01.913Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-62430","https://security-tracker.debian.org/tracker/CVE-2026-62430"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-62430#Debian:14/xen","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-62430"}],"summary":"Accesses to the CMOS memory contents are done using an indirect IO port pair. Therefore Xen needs to cache the guest chosen index, and one of the usages of the index didn't take the necessary locking"}