Add missing error check for AES_unwrap_key().

1 files changed, 3 insertions, 1 deletions

diff --git a/src/regress/lib/libcrypto/aeswrap/aes_wrap.c b/src/regress/lib/libcrypto/aeswrap/aes_wrap.c
index b48c7ae6e0..2b61ae3739 100644
--- a/src/regress/lib/libcrypto/aeswrap/aes_wrap.c
+++ b/src/regress/lib/libcrypto/aeswrap/aes_wrap.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: aes_wrap.c,v 1.4 2018/07/17 17:06:49 tb Exp $ */
+/*      $OpenBSD: aes_wrap.c,v 1.5 2021/04/04 20:40:48 tb Exp $ */
 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
  * project.
  */
@@ -85,6 +85,8 @@ AES_wrap_unwrap_test(const unsigned char *kek, int keybits,
         if (AES_set_decrypt_key(kek, keybits, &wctx))
                 goto err;
         r = AES_unwrap_key(&wctx, iv, ptmp, otmp, r);
+        if (r <= 0)
+                goto err;
 
         if (memcmp(key, ptmp, keylen))
                 goto err;