[openssl/openssl] bac7e6: Validate config options during x509 extension crea...

[Neil Horman]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: bac7e687d71b124b09ad6ad3e15be9b38c08a1ba
      https://github.com/openssl/openssl/commit/bac7e687d71b124b09ad6ad3e15be9b38c08a1ba
  Author: Neil Horman <nhorman at openssl.org>
  Date:   2024-01-05 (Fri, 05 Jan 2024)

  Changed paths:
    M crypto/x509/v3_addr.c
    M crypto/x509/v3_asid.c
    M crypto/x509/v3_crld.c
    M crypto/x509/v3_ist.c
    A test/invalid-x509.cnf
    M test/recipes/25-test_x509.t

  Log Message:
  -----------
  Validate config options during x509 extension creation

There are several points during x509 extension creation which rely on
configuration options which may have been incorrectly parsed due to
invalid settings.  Preform a value check for null in those locations to
avoid various crashes/undefined behaviors

Reviewed-by: Tomas Mraz <tomas at openssl.org>
Reviewed-by: Matt Caswell <matt at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/23183)