The DNS implementation of PowerDNS 2.9.16 and earlier allows remote attackers to cause a denial of service via a compressed DNS packet with a label length byte with an incorrect offset, which could trigger an infinite loop.
From 神龙GPT (AIGC)
PowerDNS 2.9.16 和更早版本中的 DNS 实现允许远程攻击者通过带有错误偏移量的压缩 DNS 包引发服务拒绝。这可能导致无限循环。