{"action":"Upgrade linux to 6.1.176-1 or later.","affected":[{"fixed":"6.1.176-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["6.1.176-1"],"id":"tcs_01M5NTB3AR5VAG5RNTCK3Y1EY2","modified_at":"2026-10-27T09:47:31.468861106Z","published_at":"2026-07-19T15:16:53.617Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-63867","https://security-tracker.debian.org/tracker/CVE-2026-63867"],"severity":{"label":"high","score":8.2},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-63867","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-63867"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: mptcp: close TOCTOU race while computing rcv_wnd The MPTCP output path access locklessly the MPTCP-level ack_seq in multiple times,"}