From bfbf06c4d29086f1c67ed38324a2c4a9f642d291 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mi=C5=82osz=20Kaniewski?= <milosz.kaniewski@gmail.com>
Date: Tue, 30 Jun 2020 21:46:38 +0200
Subject: [PATCH 038/147] Free pre_proc_exts in SSL_free()

Usually it will be freed in tls_early_post_process_client_hello().
However if a ClientHello callback will be used and will return
SSL_CLIENT_HELLO_RETRY then tls_early_post_process_client_hello()
may never come to the point where pre_proc_exts is freed.

Fixes #12194

CLA: trivial

Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Ben Kaduk <kaduk@mit.edu>
(Merged from https://github.com/openssl/openssl/pull/12330)

(cherry picked from commit 94941cada25433a7dca35b5b9f8cbb751ab65ab3)
---
 ssl/ssl_lib.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ssl/ssl_lib.c b/ssl/ssl_lib.c
index f6a4964..433a537 100644
--- a/ssl/ssl_lib.c
+++ b/ssl/ssl_lib.c
@@ -1200,6 +1200,8 @@ void SSL_free(SSL *s)
     OPENSSL_free(s->ext.ocsp.resp);
     OPENSSL_free(s->ext.alpn);
     OPENSSL_free(s->ext.tls13_cookie);
+    if (s->clienthello != NULL)
+        OPENSSL_free(s->clienthello->pre_proc_exts);
     OPENSSL_free(s->clienthello);
     OPENSSL_free(s->pha_context);
     EVP_MD_CTX_free(s->pha_dgst);
-- 
1.8.3.1

