Cannot login onto the system using ssh, connection closes immediately, message "comm="sshd" reason="memory violation" sig=31" is seen in the audit log

Issue

• When trying to login onto a system using ssh, the connection gets closed automatically; ssh -vvv command shows the remote end closes the connection after ssh sent the the Key Exchange request

  $ ssh -vvv <user>@<system>
  [...]
  debug1: kex: client->server aes128-ctr hmac-sha1 none
  debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<2048<8192) sent
  debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
  debug3: Wrote 24 bytes for a total of 909
  Read from socket failed: Connection reset by peer
  

• On the server side, a reason="memory violation" sig=31 message can be seen in the audit log

  type=ANOM_ABEND msg=audit([...]): auid=... uid=74 gid=74 ses=... pid=30503 comm="sshd" reason="memory violation" sig=31