1 files changed, 3 insertions, 2 deletions

diff --git a/src/lib/libcrypto/pem/pem_lib.c b/src/lib/libcrypto/pem/pem_lib.c
index bffd1fa954..6661a222f0 100644
--- a/src/lib/libcrypto/pem/pem_lib.c
+++ b/src/lib/libcrypto/pem/pem_lib.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: pem_lib.c,v 1.47 2018/05/13 10:47:54 tb Exp $ */
+/* $OpenBSD: pem_lib.c,v 1.48 2018/08/24 19:48:39 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -613,7 +613,8 @@ PEM_write_bio(BIO *bp, const char *name, const char *header,
         i = j = 0;
         while (len > 0) {
                 n = (int)((len > (PEM_BUFSIZE * 5)) ? (PEM_BUFSIZE * 5) : len);
-                EVP_EncodeUpdate(&ctx, buf, &outl, &(data[j]), n);
+                if (!EVP_EncodeUpdate(&ctx, buf, &outl, &(data[j]), n))
+                        goto err;
                 if ((outl) && (BIO_write(bp, (char *)buf, outl) != outl))
                         goto err;
                 i += outl;