{"action":"Upgrade linux to 6.12.20-1 or later.","affected":[{"fixed":"6.12.20-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["6.12.20-1"],"id":"tcs_01M5NN3NET459Z0EP33MQYSRMZ","modified_at":"2026-09-01T20:05:43.200773852Z","published_at":"2025-04-01T16:15:26.810Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-21956","https://security-tracker.debian.org/tracker/CVE-2025-21956"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-21956#Debian:13/linux","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-21956"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Assign normalized_pix_clk when color depth = 14 [WHY & HOW] A warning message \"WARNING: CPU: 4 PID: 459 at ... /dc_"}