By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service.
https://kb.isc.org/docs/cve-2022-2795
http://www.openwall.com/lists/oss-security/2022/09/21/3
https://www.debian.org/security/2022/dsa-5235
https://lists.debian.org/debian-lts-announce/2022/10/msg00007.html