{"action":"Upgrade linux to 6.12.10-1 or later.","affected":[{"fixed":"6.12.10-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["6.12.10-1"],"id":"tcs_01M5NN0GZP2NR4HVHKBHREQE42","modified_at":"2026-10-16T09:47:24.078855792Z","published_at":"2025-01-21T13:15:10.053Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-21664","https://security-tracker.debian.org/tracker/CVE-2025-21664"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-21664#Debian:13/linux","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-21664"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: dm thin: make get_first_thin use rcu-safe list first function The documentation in rculist.h explains the absence of list_empty_rcu("}