I've noticed that v2.2.3 is obviously a bugfix-only release:
...
93a12d3 (tag: v2.2.3) Update to version 2.2.3
6563dd2 use correct libica for ibmca_mechaList_test
e91e179 PKEY: Fix usage of ECX keys
fae4490 (tag: v2.2.2) Update to version 2.2.2
...
and according to the FFe definition, bugfix-only updates might be acceptable,
so I will follow that route.

I've created such a package:
openssl-ibmca (2.2.3-0ubuntu1) jammy; urgency=medium
  * New upstream release. LP: #1967141
  * The difference between 2.2.2 and 2.2.3 includes just these two fixes:
    - "PKEY: Fix usage of ECX keys"
    - "use correct libica for ibmca_mechaList_test"
    Rather than adding these as quilt patches, raising the package to the
    bugfix-only version that incl. them is preferable.
  * For "PKEY: Fix usage of ECX keys" a backport of
    "Fix compilation for OpenSSL 3.0" was needed:
    d/p/e59cce5-Fix-compilation-for-OpenSSL-3.0.patch
  * For convenience reasons a generated sample config is now included in
    the package, but also the optional configuration generator Perl script
    'ibmca-engine-opensslconfig'.

It built fine locally (on s390x - it's an s390x-only package).

In addition I've did a PPA build of this package which is available here:
https://launchpad.net/~fheimes/+archive/ubuntu/lp1967141

The build includes a run of the test suite:

local build:
============================================================================
Testsuite summary for openssl-ibmca 2.2.3
============================================================================
# TOTAL: 34
# PASS:  28
# SKIP:  6
# XFAIL: 0
# FAIL:  0
# XPASS: 0
# ERROR: 0
============================================================================

PPA:
============================================================================
Testsuite summary for openssl-ibmca 2.2.3
============================================================================
# TOTAL: 34
# PASS:  26
# SKIP:  8
# XFAIL: 0
# FAIL:  0
# XPASS: 0
# ERROR: 0
============================================================================
(Two more tests are (auto-)skipped, because the builder does not have access to 
the s390x crypto hardware.
(The other skipped tests are skipped by upstream, since they are known to cause 
issues on openssl 3 systems).

On top I installed, tested ad verified the package on an s390x system:
$ uname -a
Linux s1lp15 5.15.0-23-generic #23-Ubuntu SMP Fri Mar 11 14:53:58 UTC 2022 
s390x s390x s390x GNU/Linux
$ apt-cache policy openssl-ibmca
openssl-ibmca:
  Installed: 2.2.3-0ubuntu1
  Candidate: 2.2.3-0ubuntu1
  Version table:
 *** 2.2.3-0ubuntu1 100
        100 /var/lib/dpkg/status
     2.2.2-0ubuntu1 500
        500 http://ports.ubuntu.com/ubuntu-ports jammy/universe s390x Packages

And I can confirm that sshd does NOT core dump.

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https://bugs.launchpad.net/bugs/1967141

Title:
  [UBUNTU 22.04] ibmca engine with libica = libica.so.4 - sshd dumps
  core (openssl-ibmca)

Status in Ubuntu on IBM z Systems:
  New
Status in linux package in Ubuntu:
  New

Bug description:
  ---Problem Description---
  Summary
  =======

  New IBM HW with Crypto Accelerator cards attached
  Kernel level: 5.14 
  Core dump when configuring the ibmca engine with libica = libica.so.4 in the 
openssl.cnf file in the engine section.
  The problem only occurs with OpenSSL 3.0 and is immediately reproducible.

  
  Details
  =======
  HINT: To be able to receive core dump files at all it is needed to change the 
/etc/systemd/system.conf file entry DefaultLimitCORE=0:infinity to read
        DefaultLimitCORE=infinity:infinity

  On a system with ibmca engine configured system wide, when trying to
  use the libica.so.4 to support the ibmca engine the sshd daemon dumps
  core upon the first login attempt.

  # openssl engine -c
  (dynamic) Dynamic engine loading support
  (ibmca) Ibmca hardware engine support
   [RSA, DSA, DH]

  
  Debug Data
  ==========
  core dump file in the attachments.
   
  Contact Information = christian.r...@de.ibm.com 
   
  ---uname output---
  Linux system 5.14.
   
  ---Debugger---
  A debugger is not configured
   
  ---Steps to Reproduce---
  1.) Edit /etc/systemd/system.conf file to allow core dumps:
      Change the line DefaultLimitCORE=0:infinity
      to read         DefaultLimitCORE=infinity:infinity
  2.) run: systemctl daemon-reload
           systemctl restart systemd-coredump.socket
  3.) Run the /usr/share/doc/openssl-ibmca/ibmca-engine-opensslconfig perl 
script
  4.) Edit the /etc/pki/tls file near the end to contain the line
      to back the ibmca engine by the libica.so.4 library as outlined in the
      /usr/share/doc/openssl-ibmca/README.md file
  5.) Run: openssl engine -c
  6.) Keep the current session open for subsequently stepping back to the
      original openssl.cnf!
  7.) Open up a new ssh session to the system under test
      and watch the login to fail with broken pipe
  8.) On the remaining session, run
      coreumpctl list / coredumpctl dump
   
  Userspace tool common name: openssl-ibmca 

  Userspace rpm: openssl-ibmca-2.2.2-1.el9.s390x 
   
  The userspace tool has the following bit modes: 64bit 

  Userspace tool obtained from project website:  na

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