Check X509_NAME_oneline() return value when it will have to allocate memory.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/lib/libcrypto/x509/x509_cmp.c b/src/lib/libcrypto/x509/x509_cmp.c
index b63faaad2c..e783683f3a 100644
--- a/src/lib/libcrypto/x509/x509_cmp.c
+++ b/src/lib/libcrypto/x509/x509_cmp.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: x509_cmp.c,v 1.23 2014/07/12 16:03:37 miod Exp $ */
+/* $OpenBSD: x509_cmp.c,v 1.24 2014/07/13 11:15:54 miod Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -93,6 +93,8 @@ X509_issuer_and_serial_hash(X509 *a)
 
         EVP_MD_CTX_init(&ctx);
         f = X509_NAME_oneline(a->cert_info->issuer, NULL, 0);
+        if (f == NULL)
+                goto err;
         if (!EVP_DigestInit_ex(&ctx, EVP_md5(), NULL))
                 goto err;
         if (!EVP_DigestUpdate(&ctx, (unsigned char *)f, strlen(f)))