untrusted comment: verify with openbsd-68-base.pub
RWQZj25CSG5R2nhM3eiCjCHX7aU63sAfafywG/x5fPzmY+FTottbTamGRK0yMGxC+NBPdJVfBrHa1W6asrikrESFZPfFLOz4+wA=

OpenBSD 6.8 errata 029, August 20, 2021:

Printing a certificate can result in a crash in X509_CERT_AUX_print().

Apply by doing:
   signify -Vep /etc/signify/openbsd-68-base.pub -x 029_x509.patch.sig \
       -m - | (cd /usr/src && patch -p0)

And then rebuild and install libcrypto, isakmpd and unwind:
   cd /usr/src/lib/libcrypto
   make obj
   make includes
   make
   make install
   cd /usr/src/sbin/isakmpd
   make obj
   make
   make install
   cd /usr/src/sbin/unwind
   make obj
   make
   make install

Index: lib/libcrypto/asn1/t_x509a.c
===================================================================
RCS file: /cvs/src/lib/libcrypto/asn1/t_x509a.c,v
retrieving revision 1.8
diff -u -p -r1.8 t_x509a.c
--- lib/libcrypto/asn1/t_x509a.c        11 Jul 2014 08:44:47 -0000      1.8
+++ lib/libcrypto/asn1/t_x509a.c        17 Aug 2021 16:31:06 -0000
@@ -105,8 +105,8 @@ X509_CERT_AUX_print(BIO *out, X509_CERT_
       } else
               BIO_printf(out, "%*sNo Rejected Uses.\n", indent, "");
       if (aux->alias)
-               BIO_printf(out, "%*sAlias: %s\n", indent, "",
-                   aux->alias->data);
+               BIO_printf(out, "%*sAlias: %.*s\n", indent, "",
+                   aux->alias->length, aux->alias->data);
       if (aux->keyid) {
               BIO_printf(out, "%*sKey Id: ", indent, "");
               for (i = 0; i < aux->keyid->length; i++)