wolfssl -- multiple issues

wolfSSL blog reports:

In release 5.4.0 there were 3 vulnerabilities listed as
fixed in wolfSSL. Two relatively new reports, one dealing with a DTLS
1.0/1.2 denial of service attack and the other a ciphertext attack on
ECC/DH operations. The last vulnerability listed was a public
disclosure of a previous attack on AMD devices fixed since wolfSSL
version 5.1.0. Coordination of the disclosure of the attack was done
responsibly, in cooperation with the researchers, waiting for the
public release of the attack details since it affects multiple
security libraries.