X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fbn%2Fbn_ctx.c;h=54b799961aa43cb1fe89de3258dde33fa00aada6;hp=228c8537fa089ed41ccb196b272a32c71405327b;hb=e2e69dce151462e05acd00bd0e56fea56144d485;hpb=3c97136e82ecd61f7fcc9032c3159070aeb43475

diff --git a/crypto/bn/bn_ctx.c b/crypto/bn/bn_ctx.c
index 228c8537fa..54b799961a 100644
--- a/crypto/bn/bn_ctx.c
+++ b/crypto/bn/bn_ctx.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2000-2019 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -227,6 +227,8 @@ BIGNUM *BN_CTX_get(BN_CTX *ctx)
     }
     /* OK, make sure the returned bignum is "zero" */
     BN_zero(ret);
+    /* clear BN_FLG_CONSTTIME if leaked from previous frames */
+    ret->flags &= (~BN_FLG_CONSTTIME);
     ctx->used++;
     CTXDBG_RET(ctx, ret);
     return ret;