A 9.9 CVE has been announced for RCE in Linux

A user from slashdot[0] says having a proper firewall will mitigate the issue:

"Yes, I've read the vulnerability report and have reproduced it. You'll get the details when the agreed upon disclose date arrives.

As for the firewall, just blocking incoming connections it sufficient for protection. On Ubuntu, this should do it: sudo ufw enable"

[0] - https://it.slashdot.org/comments.pl?sid=23466721&cid=6481791...

Looking forward to the official disclosure. We'll see if it's really a 9.9.