golang.org/x/crypto before v0.0.0-20200220183623-bac4c82f6975 for Go allows a panic during signature verification in the golang.org/x/crypto/ssh package. A client can attack an SSH server that accepts public keys. Also, a server can attack any SSH client.
https://lists.debian.org/debian-lts-announce/2020/11/msg00031.html
https://lists.debian.org/debian-lts-announce/2020/11/msg00027.html
https://lists.debian.org/debian-lts-announce/2020/10/msg00014.html