CVE-2017-9104
An issue was discovered in adns before 1.5.2. It hangs, eating CPU, if a compression pointer loop is encountered.
Date published : 2020-06-18
http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=adns.git;a=blob;f=changelog
https://www.chiark.greenend.org.uk/pipermail/adns-announce/2020/000004.html