From: Matt Caswell <matt@openssl.org>
Date: Wed, 23 Nov 2016 22:12:40 +0000 (+0000)
Subject: Fix missing NULL checks in CKE processing
X-Git-Tag: OpenSSL_1_1_0d~108
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=efbe126e3ebb9123ac9d058aa2bb044261342aaa;p=openssl

Fix missing NULL checks in CKE processing

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

diff --git a/ssl/statem/statem_clnt.c b/ssl/statem/statem_clnt.c
index e90a63cc87..5ea0919e4a 100644
--- a/ssl/statem/statem_clnt.c
+++ b/ssl/statem/statem_clnt.c
@@ -2258,6 +2258,11 @@ static int tls_construct_cke_dhe(SSL *s, unsigned char **p, int *len, int *al)
         return 0;
     }
     ckey = ssl_generate_pkey(skey);
+    if (ckey == NULL) {
+        SSLerr(SSL_F_TLS_CONSTRUCT_CKE_DHE, ERR_R_INTERNAL_ERROR);
+        return 0;
+    }
+
     dh_clnt = EVP_PKEY_get0_DH(ckey);
 
     if (dh_clnt == NULL || ssl_derive(s, ckey, skey) == 0) {
@@ -2296,6 +2301,10 @@ static int tls_construct_cke_ecdhe(SSL *s, unsigned char **p, int *len, int *al)
     }
 
     ckey = ssl_generate_pkey(skey);
+    if (ckey == NULL) {
+        SSLerr(SSL_F_TLS_CONSTRUCT_CKE_ECDHE, ERR_R_INTERNAL_ERROR);
+        goto err;
+    }
 
     if (ssl_derive(s, ckey, skey) == 0) {
         SSLerr(SSL_F_TLS_CONSTRUCT_CKE_ECDHE, ERR_R_EVP_LIB);