{"action":"Upgrade linux-6.12 to 6.12.113-1~deb12u1 or later.","affected":[{"fixed":"6.12.113-1~deb12u1","introduced":"0"}],"component":"linux-6.12","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["6.12.113-1~deb12u1"],"id":"tcs_01M5NNSJNDA079EXDB76B181PC","modified_at":"2026-10-23T18:04:13.241287699Z","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:12/linux-6.12","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_"}