Do the major distros not share and coordinate such high-impact security issues with each other? 1015 is tracked for RedHat bugzilla since 2022-03-17. Can't find

Do the major distros not share and coordinate such high-impact security issues with each other? 1015 is tracked for RedHat bugzilla since 2022-03-17. Can't find any information relating to Gentoo, Arch or NixOS, and no fix for Debian or Ubuntu. Is there a patch one can apply in the meantime? The RedHat suggested mitigation requires disabling functionality that is heavily depended on.