{"action":"Upgrade linux to 6.12.13-1 or later.","affected":[{"fixed":"6.12.13-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["6.12.13-1"],"id":"tcs_01M5NN0Z2W4W7QM2WDZ3KE38R6","modified_at":"2026-10-15T09:47:42.266818820Z","published_at":"2025-02-27T02:15:14.137Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-21705","https://security-tracker.debian.org/tracker/CVE-2025-21705"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-21705#Debian:14/linux","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-21705"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: mptcp: handle fastopen disconnect correctly Syzbot was able to trigger a data stream corruption: WARNING: CPU: 0 PID: 9846 at net/mp"}