commit e34c66c6b07d69ec4df8e488976e28d851ad87e6
author Emilia Kasper <emilia@openssl.org> Tue Sep 01 16:31:55 2015 +0200
committer Emilia Kasper <emilia@openssl.org> Thu Sep 10 17:21:23 2015 +0200
tree 34cb0273ddc02f0d2a30c045d4b2dd429b7cdd67
parent cdde7b49a4ded6ce25b348314a231b99ce884c06

RT3754: check for NULL pointer

Fix both the caller to error out on malloc failure, as well as the
eventual callee to handle a NULL gracefully.

Reviewed-by: Viktor Dukhovni <viktor@openssl.org>

crypto/evp/pmeth_gn.c

diff --git a/crypto/evp/pmeth_gn.c b/crypto/evp/pmeth_gn.c
index 705801f..9416e1a 100644
--- a/crypto/evp/pmeth_gn.c
+++ b/crypto/evp/pmeth_gn.c
@@ -96,12 +96,17 @@
         return -1;
     }
 
-    if (!ppkey)
+    if (ppkey == NULL)
         return -1;
 
-    if (!*ppkey)
+    if (*ppkey == NULL)
         *ppkey = EVP_PKEY_new();
 
+    if (*ppkey == NULL) {
+        EVPerr(EVP_F_EVP_PKEY_PARAMGEN, ERR_R_MALLOC_FAILURE);
+        return -1;
+    }
+
     ret = ctx->pmeth->paramgen(ctx, *ppkey);
     if (ret <= 0) {
         EVP_PKEY_free(*ppkey);