From: Matt Caswell <matt@openssl.org>
Date: Sat, 9 May 2015 05:51:25 +0000 (+0800)
Subject: Check sk_SSL_CIPHER_new_null return value
X-Git-Tag: OpenSSL_1_1_0-pre1~1173
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=14def5f5375594830597cc153e11c6017f6adddf;p=oweals%2Fopenssl.git

Check sk_SSL_CIPHER_new_null return value

If sk_SSL_CIPHER_new_null() returns NULL then ssl_bytes_to_cipher_list()
should also return NULL.

Based on an original patch by mrpre <mrpre@163.com>.

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

diff --git a/ssl/ssl_lib.c b/ssl/ssl_lib.c
index 0a2c04e741..8f74ef10b4 100644
--- a/ssl/ssl_lib.c
+++ b/ssl/ssl_lib.c
@@ -1483,9 +1483,13 @@ STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p,
                SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
         return (NULL);
     }
-    if ((skp == NULL) || (*skp == NULL))
+    if ((skp == NULL) || (*skp == NULL)) {
         sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */
-    else {
+        if(sk == NULL) {
+            SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
+            return NULL;
+        }
+    } else {
         sk = *skp;
         sk_SSL_CIPHER_zero(sk);
     }