{"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_01M5NNS8YABBEX0PK8XP0YBSQS","modified_at":"2026-10-23T18:05:30.002520407Z","published_at":"2025-11-12T11:15:41.807Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-40123","https://security-tracker.debian.org/tracker/CVE-2025-40123"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-40123","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-40123"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: bpf: Enforce expected_attach_type for tailcall compatibility Yinhao et al. recently reported: Our fuzzer tool discovered an uninitia"}