commit 35db366cf453427c855bea8ca097618a8a8d7ff0
author Dr. Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com> Mon Sep 10 00:20:12 2018 +0200
committer Matt Caswell <matt@openssl.org> Mon Sep 10 11:11:43 2018 +0100
tree 4e32263a177677cfa16a51a3a181993c55e0a6cf
parent 427e91d928ce7a1c583e4bba761cb17a85ac95b4

test/evp_extra_test.c: fix null pointer dereference

It's actually not a real issue but caused by the absence of the default case
which does not occur in reality but which makes coverity see a code path where
pkey remains unassigned.

Reported by Coverity Scan (CID 1423323)
[extended tests]

Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7158)

test/evp_extra_test.c

diff --git a/test/evp_extra_test.c b/test/evp_extra_test.c
index f0b0040..7b847ee 100644
--- a/test/evp_extra_test.c
+++ b/test/evp_extra_test.c
@@ -855,27 +855,32 @@
 
     p = input;
 
-    if (type == 0 &&
-            (!TEST_ptr(pkey = d2i_AutoPrivateKey(NULL, &p, input_len))
-             || !TEST_ptr_eq(p, input + input_len)
-             || !TEST_int_eq(EVP_PKEY_id(pkey), expected_id)))
-        goto done;
-
+    switch (type) {
+    case 0:
+        if (!TEST_ptr(pkey = d2i_AutoPrivateKey(NULL, &p, input_len))
+            || !TEST_ptr_eq(p, input + input_len)
+            || !TEST_int_eq(EVP_PKEY_id(pkey), expected_id))
+            goto done;
+        break;
 #ifndef OPENSSL_NO_EC
-    if (type == 1 &&
-            (!TEST_ptr(pubkey = BIO_new_mem_buf(input, input_len))
-             || !TEST_ptr(eckey = d2i_EC_PUBKEY_bio(pubkey, NULL))
-             || !TEST_ptr(pkey = EVP_PKEY_new())
-             || !TEST_true(EVP_PKEY_assign_EC_KEY(pkey, eckey))))
-        goto done;
-
-    if (type == 2 &&
-            (!TEST_ptr(eckey = d2i_ECParameters(NULL, &p, input_len))
-             || !TEST_ptr_eq(p, input + input_len)
-             || !TEST_ptr(pkey = EVP_PKEY_new())
-             || !TEST_true(EVP_PKEY_assign_EC_KEY(pkey, eckey))))
-        goto done;
+    case 1:
+        if (!TEST_ptr(pubkey = BIO_new_mem_buf(input, input_len))
+            || !TEST_ptr(eckey = d2i_EC_PUBKEY_bio(pubkey, NULL))
+            || !TEST_ptr(pkey = EVP_PKEY_new())
+            || !TEST_true(EVP_PKEY_assign_EC_KEY(pkey, eckey)))
+            goto done;
+        break;
+    case 2:
+        if (!TEST_ptr(eckey = d2i_ECParameters(NULL, &p, input_len))
+            || !TEST_ptr_eq(p, input + input_len)
+            || !TEST_ptr(pkey = EVP_PKEY_new())
+            || !TEST_true(EVP_PKEY_assign_EC_KEY(pkey, eckey)))
+            goto done;
+        break;
 #endif
+    default:
+        return 0;
+    }
 
     if (!TEST_ptr(ctx = EVP_PKEY_CTX_new(pkey, NULL)))
         goto done;