{"action":"Upgrade linux to 6.12.63-1 or later.","affected":[{"fixed":"6.12.63-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["6.12.63-1"],"id":"tcs_01M5NNT44QG2F9YMKAFHR0XZ5C","modified_at":"2026-10-23T18:04:36.472082949Z","published_at":"2025-12-04T13:15:48.473Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-40215","https://security-tracker.debian.org/tracker/CVE-2025-40215"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-40215#Debian:13/linux","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-40215"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: xfrm: delete x->tunnel as we delete x The ipcomp fallback tunnels currently get deleted (from the various lists and hashtables) as t"}