diff -up openssl-3.0.0-beta2/apps/req.c.req-segfault openssl-3.0.0-beta2/apps/req.c
--- openssl-3.0.0-beta2/apps/req.c.req-segfault	2021-08-10 16:24:58.784384336 +0200
+++ openssl-3.0.0-beta2/apps/req.c	2021-08-10 16:26:38.347688172 +0200
@@ -996,8 +996,8 @@ int req_main(int argc, char **argv)
         if (EVP_PKEY_is_a(tpubkey, "RSA")) {
             BIGNUM *n = NULL;
 
-            /* Every RSA key has an 'n' */
-            EVP_PKEY_get_bn_param(pkey, "n", &n);
+            if (!EVP_PKEY_get_bn_param(tpubkey, "n", &n))
+                goto end;
             BN_print(out, n);
             BN_free(n);
         } else {
diff -up openssl-3.0.0-beta2/test/recipes/25-test_req.t.req-segfault openssl-3.0.0-beta2/test/recipes/25-test_req.t
--- openssl-3.0.0-beta2/test/recipes/25-test_req.t.req-segfault	2021-08-10 16:26:53.305884053 +0200
+++ openssl-3.0.0-beta2/test/recipes/25-test_req.t	2021-08-10 16:28:33.674221058 +0200
@@ -78,7 +78,7 @@ subtest "generating alt certificate requ
 
 
 subtest "generating certificate requests with RSA" => sub {
-    plan tests => 7;
+    plan tests => 8;
 
     SKIP: {
         skip "RSA is not supported by this OpenSSL build", 2
@@ -105,6 +105,11 @@ subtest "generating certificate requests
 
         ok(run(app(["openssl", "req",
                     "-config", srctop_file("test", "test.cnf"),
+                    "-modulus", "-in", "testreq-rsa.pem", "-noout"])),
+           "Printing a modulus of the request key");
+
+        ok(run(app(["openssl", "req",
+                    "-config", srctop_file("test", "test.cnf"),
                     "-new", "-out", "testreq_withattrs_pem.pem", "-utf8",
                     "-key", srctop_file("test", "testrsa_withattrs.pem")])),
            "Generating request from a key with extra attributes - PEM");