The Treck TCP/IP stack before 6.0.1.41 has an IPv4 tunneling Double Free.
https://www.tenable.com/cyber-exposure/2020-threat-landscape-retrospective
https://www.kb.cert.org/vuls/id/257161/
https://www.kb.cert.org/vuls/id/257161
https://www.jsof-tech.com/ripple20/
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00295.html
https://www.dell.com/support/article/de-de/sln321836/dell-response-to-the-ripple20-vulnerabilities
https://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=hpesbhf04012en_us
https://security.netapp.com/advisory/ntap-20200625-0006/
https://jsof-tech.com/vulnerability-disclosure-policy/
http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-006.txt