{"action":"Upgrade linux to 6.1.158-1 or later.","affected":[{"fixed":"6.1.158-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["6.1.158-1"],"id":"tcs_01M5NNSQCC52GGXPVPBF30WWQ4","modified_at":"2026-10-23T18:04:13.391613996Z","published_at":"2025-11-12T11:15:47.780Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-40173","https://security-tracker.debian.org/tracker/CVE-2025-40173"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-40173","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-40173"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: net/ip6_tunnel: Prevent perpetual tunnel growth Similarly to ipv4 tunnel, ipv6 version updates dev->needed_headroom, too. While ipv4"}