By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources.
https://kb.isc.org/docs/cve-2022-38178
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