Calm down, man. I think Ubuntu is doing o.k. here. What is pretty bad that people cannot read advisories anymore and fix there machines, instead crying for their mama (in this case Ubuntu).
Use this firewall rule and you are fine - it blocks the tcp options negoation - and things remain working of course: ` nft add table ip cve_2026_98432 nft add chain ip cve_2026_98432 pre '{ type filter hook prerouting priority -300; }' nft add rule ip cve_2026_98432 pre meta l4proto tcp ip hdrlength gt 5 counter drop `