{"action":"Upgrade linux to 6.17.6-1 or later.","affected":[{"fixed":"6.17.6-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["6.17.6-1"],"id":"tcs_01M5NNSJHW8F5M6CRYT4K2F07Q","modified_at":"2026-10-31T10:00:42.357961886Z","published_at":"2025-11-12T11:15:45.897Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-40158","https://security-tracker.debian.org/tracker/CVE-2025-40158"],"severity":{"label":"high","score":8.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-40158#Debian:14/linux","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-40158"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: ipv6: use RCU in ip6_output() Use RCU in ip6_output() in order to use dst_dev_rcu() to prevent possible UAF. We can remove rcu_read_"}