{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":[],"id":"tcs_01M5NN0F2SBQYQW53GJ0V32GP2","modified_at":"2026-10-31T10:00:28.473401924Z","published_at":"2025-01-21T13:15:09.437Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-21658","https://security-tracker.debian.org/tracker/CVE-2025-21658"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-21658","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-21658"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: btrfs: avoid NULL pointer dereference if no valid extent tree [BUG] Syzbot reported a crash with the following call trace: BTRFS inf"}