{"action":"Upgrade linux to 6.12.13-1 or later.","affected":[{"fixed":"6.12.13-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["6.12.13-1"],"id":"tcs_01M5NN18PMPY7SJQZP98B5T99C","modified_at":"2026-10-15T09:47:43.265144182Z","published_at":"2025-02-27T02:15:16.833Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-21731","https://security-tracker.debian.org/tracker/CVE-2025-21731"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-21731#Debian:14/linux","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-21731"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: nbd: don't allow reconnect after disconnect Following process can cause nbd_config UAF: 1) grab nbd_config temporarily; 2) nbd_genl_"}