Thanks for your analysis. Based on your description I was able to find an instance of this bug that impacts an unmodified upstream OpenSSL directly. I've raised an issue for it here:
https://github.com/openssl/openssl/issues/18047 That particular instance only impacts OpenSSL 3.0 - but its the same underlying cause as here. ** Bug watch added: github.com/openssl/openssl/issues #18047 https://github.com/openssl/openssl/issues/18047 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1947588 Title: Infinite Loop in OpenSSL s_server To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/1947588/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs