{"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_01M5NSV5YRDR99Y3D914RG9YNQ","modified_at":"2026-10-23T18:05:06.155251260Z","published_at":"2026-06-25T09:16:35.697Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-53183","https://security-tracker.debian.org/tracker/CVE-2026-53183"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-53183","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-53183"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: mptcp: allow subflow rcv wnd to shrink In MPTCP connection, the `window` field in the TCP header refers to the MPTCP-level rcv_nxt a"}