{"action":"Upgrade linux to 6.12.16-1 or later.","affected":[{"fixed":"6.12.16-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["6.12.16-1"],"id":"tcs_01M5NN1R2T8KVQHDB3S5YA7P7S","modified_at":"2026-09-01T20:05:42.629200560Z","published_at":"2025-02-27T03:15:18.533Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-21778","https://security-tracker.debian.org/tracker/CVE-2025-21778"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-21778","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-21778"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: tracing: Do not allow mmap() of persistent ring buffer When trying to mmap a trace instance buffer that is attached to reserve_mem,"}