{"action":"Upgrade linux-6.12 to 6.12.111-1~deb12u1 or later.","affected":[{"fixed":"6.12.111-1~deb12u1","introduced":"0"}],"component":"linux-6.12","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["6.12.111-1~deb12u1"],"id":"tcs_01M5NVSQR3X4XDJV0Y6AGTJ95C","modified_at":"2026-10-31T10:02:06.959519362Z","published_at":"2026-09-04T16:18:13.430Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-80847","https://security-tracker.debian.org/tracker/CVE-2026-80847"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-80847#Debian:12/linux-6.12","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-80847"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: tcp: clamp route advmss to TCP_MIN_MSS tcp_select_initial_window() assumes that callers never pass an MSS smaller than 1, but route-"}