Add checks on CRYPTO_set_ex_data return value

Fix possible leak in danetest.c

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>

diff --git a/crypto/engine/eng_dyn.c b/crypto/engine/eng_dyn.c
index af9942c082621dbc701a798c0195edb2a91f643f..718599f6d95a42b21710ce3c626b3e298f04c768 100644 (file)
--- a/crypto/engine/eng_dyn.c
+++ b/crypto/engine/eng_dyn.c
@@ -154,6 +154,7 @@ static void dynamic_data_ctx_free_func(void *parent, void *ptr,
 static int dynamic_set_data_ctx(ENGINE *e, dynamic_data_ctx **ctx)
 {
     dynamic_data_ctx *c = OPENSSL_zalloc(sizeof(*c));
+    int ret = 1;
 
     if (c == NULL) {
         ENGINEerr(ENGINE_F_DYNAMIC_SET_DATA_CTX, ERR_R_MALLOC_FAILURE);
@@ -173,9 +174,11 @@ static int dynamic_set_data_ctx(ENGINE *e, dynamic_data_ctx **ctx)
                                                        dynamic_ex_data_idx))
         == NULL) {
         /* Good, we're the first */
-        ENGINE_set_ex_data(e, dynamic_ex_data_idx, c);
-        *ctx = c;
-        c = NULL;
+        ret = ENGINE_set_ex_data(e, dynamic_ex_data_idx, c);
+        if (ret) {
+            *ctx = c;
+            c = NULL;
+        }
     }
     CRYPTO_THREAD_unlock(global_engine_lock);
     /*
@@ -185,7 +188,7 @@ static int dynamic_set_data_ctx(ENGINE *e, dynamic_data_ctx **ctx)
     if (c)
         sk_OPENSSL_STRING_free(c->dirs);
     OPENSSL_free(c);
-    return 1;
+    return ret;
 }
 
 /*

diff --git a/test/danetest.c b/test/danetest.c
index d914c45d05e005f66d8683db3085a4fa17aa3215..d473b126894eb9c56482aaf6a292a6fa2340c17f 100644 (file)
--- a/test/danetest.c
+++ b/test/danetest.c
@@ -74,7 +74,7 @@ static void print_errors(void)
 
 static int verify_chain(SSL *ssl, STACK_OF(X509) *chain)
 {
-    int ret;
+    int ret = -1;
     X509_STORE_CTX *store_ctx;
     SSL_CTX *ssl_ctx = SSL_get_SSL_CTX(ssl);
     X509_STORE *store = SSL_CTX_get_cert_store(ssl_ctx);
@@ -85,8 +85,9 @@ static int verify_chain(SSL *ssl, STACK_OF(X509) *chain)
         return -1;
 
     if (!X509_STORE_CTX_init(store_ctx, store, cert, chain))
-        return 0;
-    X509_STORE_CTX_set_ex_data(store_ctx, store_ctx_idx, ssl);
+        goto end;
+    if (!X509_STORE_CTX_set_ex_data(store_ctx, store_ctx_idx, ssl))
+        goto end;
 
     X509_STORE_CTX_set_default(store_ctx,
             SSL_is_server(ssl) ? "ssl_client" : "ssl_server");
@@ -101,6 +102,7 @@ static int verify_chain(SSL *ssl, STACK_OF(X509) *chain)
 
     SSL_set_verify_result(ssl, X509_STORE_CTX_get_error(store_ctx));
     X509_STORE_CTX_cleanup(store_ctx);
+end:
     X509_STORE_CTX_free(store_ctx);
 
     return (ret);

diff --git a/util/indent.pro b/util/indent.pro
index b7958e31aac73f513e4a5f5823ecc8fdb80f5ee7..71997cb41bf2db259cad97e48600e08eba30a82f 100644 (file)
--- a/util/indent.pro
+++ b/util/indent.pro
@@ -187,11 +187,8 @@
 -T CRYPTO_EX_DATA_FUNCS
 -T CRYPTO_EX_DATA_IMPL
 -T CRYPTO_EX_dup
--T CRYPTO_EX_dup
--T CRYPTO_EX_free
 -T CRYPTO_EX_free
 -T CRYPTO_EX_new
--T CRYPTO_EX_new
 -T CRYPTO_MEM_LEAK_CB
 -T CRYPTO_THREADID
 -T CRYPTO_dynlock_value