{"action":"Upgrade linux to 6.12.19-1 or later.","affected":[{"fixed":"6.12.19-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["6.12.19-1"],"id":"tcs_01M5NN3JA9F83V0KBHBQ94ACVV","modified_at":"2026-09-01T20:05:43.136274588Z","published_at":"2025-04-01T16:15:25.633Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-21945","https://security-tracker.debian.org/tracker/CVE-2025-21945"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-21945#Debian:14/linux","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-21945"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb2_lock If smb_lock->zero_len has value, ->llist of smb_lock is not delete and flock is old one. It w"}