{"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_01M5NT8J6THA16AWYPJKKC68JD","modified_at":"2026-10-04T22:00:09.154466754Z","published_at":"2026-07-28T13:19:02.110Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-62432","https://security-tracker.debian.org/tracker/CVE-2026-62432"],"severity":{"label":"high","score":7.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-62432#Debian:14/xen","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-62432"}],"summary":"The EVTCHNOP_expand_array hypercall checks for whether FIFO event channels are enabled, but without holding the correct lock. It can race with EVTCHNOP_reset, resulting in dereferencing a NULL pointer"}