From 517d396174b2c1c49faa00b5215f037d0183ef83 Mon Sep 17 00:00:00 2001
From: Justin Smith <justsmth@amazon.com>
Date: Thu, 13 Nov 2025 16:28:12 -0500
Subject: [PATCH] Avoid NULL dereference

---
 tool-openssl/test_util.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tool-openssl/test_util.cc b/tool-openssl/test_util.cc
index 465c16a4ee7..91249c65476 100644
--- a/tool-openssl/test_util.cc
+++ b/tool-openssl/test_util.cc
@@ -193,8 +193,9 @@ bool CompareCSRs(X509_REQ *csr1, X509_REQ *csr2) {
     ASN1_STRING *data2 = X509_NAME_ENTRY_get_data(entry2);
 
     if (ASN1_STRING_cmp(data1, data2) != 0) {
+      const char* long_name = OBJ_nid2ln(OBJ_obj2nid(obj1));
       std::cout << "CSRs have different values for entry "
-                << OBJ_nid2ln(OBJ_obj2nid(obj1)) << std::endl;
+                << (long_name ? long_name : "<UNKNOWN>")  << std::endl;
       return false;
     }
   }