CVE-2021-25219: Lame cache can be abused to severely degrade resolver performance

CVE-2021-25214: A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly

CVE-2021-25215: An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself

CVE-2021-25216: A second vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack

Choosing a Read-Write Lock Implementation to Use With named

Hardware Security Modules That Work with BIND 9