{"action":"Upgrade linux to 6.12.111-1 or later.","affected":[{"fixed":"6.12.111-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["6.12.111-1"],"id":"tcs_01M5NVSKWF4G4KYXZ2Z1CSAP38","modified_at":"2026-10-23T18:04:03.476323494Z","published_at":"2026-09-04T16:18:12.440Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-80840","https://security-tracker.debian.org/tracker/CVE-2026-80840"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-80840#Debian:13/linux","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-80840"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: ipv6: seg6: clear IPv4 control block on IPIP decapsulation End.DX4 and End.DT4 decapsulate an IPv4 packet through decap_and_validate"}