{"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:13","exploited":false,"fixed_versions":["6.12.19-1"],"id":"tcs_01M5NN2SGKQA23JVJ6RDS07HH8","modified_at":"2026-10-31T10:00:36.337343120Z","published_at":"2025-03-27T15:15:56.710Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-21888","https://security-tracker.debian.org/tracker/CVE-2025-21888"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-21888#Debian:13/linux","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-21888"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix a WARN during dereg_mr for DM type Memory regions (MR) of type DM (device memory) do not have an associated umem. In"}