From: Pauli <paul.dale@oracle.com>
Date: Tue, 30 Jul 2019 21:19:33 +0000 (+1000)
Subject: Check for NULL return from zalloc in dh_dupctx.
X-Git-Tag: openssl-3.0.0-alpha1~1698
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=02c163ea8936d75c7334d81d86c2a713dea40371;p=oweals%2Fopenssl.git

Check for NULL return from zalloc in dh_dupctx.

Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/9485)
---

diff --git a/providers/common/exchange/dh_exch.c b/providers/common/exchange/dh_exch.c
index b4bfd5f419..62041daab3 100644
--- a/providers/common/exchange/dh_exch.c
+++ b/providers/common/exchange/dh_exch.c
@@ -106,6 +106,8 @@ static void *dh_dupctx(void *vpdhctx)
     PROV_DH_CTX *dstctx;
 
     dstctx = OPENSSL_zalloc(sizeof(*srcctx));
+    if (dstctx == NULL)
+        return NULL;
 
     *dstctx = *srcctx;
     if (dstctx->dh != NULL && !DH_up_ref(dstctx->dh)) {