{"action":"Upgrade linux to 6.12.16-1 or later.","affected":[{"fixed":"6.12.16-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["6.12.16-1"],"id":"tcs_01M5NN1HMQM8GDX47G414W8RN3","modified_at":"2026-10-17T17:00:07.847209391Z","published_at":"2025-02-27T03:15:16.550Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-21759","https://security-tracker.debian.org/tracker/CVE-2025-21759"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-21759#Debian:14/linux","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-21759"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: extend RCU protection in igmp6_send() igmp6_send() can be called without RTNL or RCU being held. Extend RCU protection"}