From 5d736f7eca485f81ff5eb9eb05d44f98f6e470cc Mon Sep 17 00:00:00 2001
From: Angus Gratton <angus@espressif.com>
Date: Wed, 12 Jul 2017 16:34:26 +0800
Subject: [PATCH] mbedtls: Fix memory leak in initial ECDH exchange if
 OOM/failure occurs

In ecp_mul_comb(), if (!p_eq_g && grp->T == NULL) and ecp_precompute_comb() fails (which can happen due to OOM), then the new array of points T was leaked.
---
 components/mbedtls/library/ecp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/mbedtls/library/ecp.c b/components/mbedtls/library/ecp.c
index f51f2251e..fa5d0ddc1 100644
--- a/components/mbedtls/library/ecp.c
+++ b/components/mbedtls/library/ecp.c
@@ -1406,7 +1406,7 @@ static int ecp_mul_comb( mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
 
 cleanup:
 
-    if( T != NULL && ! p_eq_g )
+    if( T != NULL && T != grp->T )
     {
         for( i = 0; i < pre_len; i++ )
             mbedtls_ecp_point_free( &T[i] );