How to mitigate SSH Terrapin Prefix Truncation Weakness

Our office subscribes to the CISA Cyber Hygiene Report which is listing our site as having the "SSH Terrapin Prefix Truncation Weakness". I know this is not a super critical vulnerability, but management is anxious about it, especially since Homeland Security it report it to us.

I've found lots of posts describing what it is, but no mitigation other than on RHEL Linux.

Is there something I can do on Slackware 15.0? I'd like to smooth the ruffled feathers.