1 files changed, 17 insertions, 9 deletions

diff --git a/src/lib/libcrypto/bn/bn_lib.c b/src/lib/libcrypto/bn/bn_lib.c
index a8022f6668..9787a31dbb 100644
--- a/src/lib/libcrypto/bn/bn_lib.c
+++ b/src/lib/libcrypto/bn/bn_lib.c
@@ -226,11 +226,22 @@ void BN_clear_free(BIGNUM *a)
                 free(a);
         }
 
-void
-BN_free(BIGNUM *a)
-{
-        BN_clear_free(a);
-}
+void BN_free(BIGNUM *a)
+        {
+        if (a == NULL) return;
+        bn_check_top(a);
+        if ((a->d != NULL) && !(BN_get_flags(a,BN_FLG_STATIC_DATA)))
+                free(a->d);
+        if (a->flags & BN_FLG_MALLOCED)
+                free(a);
+        else
+                {
+#ifndef OPENSSL_NO_DEPRECATED
+                a->flags|=BN_FLG_FREE;
+#endif
+                a->d = NULL;
+                }
+        }
 
 void BN_init(BIGNUM *a)
         {
@@ -389,10 +400,7 @@ BIGNUM *bn_expand2(BIGNUM *b, int words)
                 {
                 BN_ULONG *a = bn_expand_internal(b, words);
                 if(!a) return NULL;
-                if(b->d) {
-                        OPENSSL_cleanse(b->d, b->dmax * sizeof(b->d[0]));
-                        free(b->d);
-                }
+                if(b->d) free(b->d);
                 b->d=a;
                 b->dmax=words;
                 }