{"action":"Upgrade linux to 6.1.133-1 or later.","affected":[{"fixed":"6.1.133-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["6.1.133-1"],"id":"tcs_01M5NN33H90G4SP5F912AP4M99","modified_at":"2026-09-01T20:05:42.972299257Z","published_at":"2025-04-01T16:15:20.857Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-21904","https://security-tracker.debian.org/tracker/CVE-2025-21904"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-21904","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-21904"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: caif_virtio: fix wrong pointer check in cfv_probe() del_vqs() frees virtqueues, therefore cfv->vq_tx pointer should be checked for N"}