From: Sven-Haegar Koch <haegar@sdinet.de>
Date: Fri, 20 Apr 2012 23:59:01 +0000 (+0200)
Subject: free_connection_partially(): Avoid possible use-after-free for c->hischallenge
X-Git-Tag: import-tinc-1.1~376
X-Git-Url: http://git.meshlink.io/?p=meshlink;a=commitdiff_plain;h=d3f4cf59ca917386e7c6358a98adbe3b8e9ce87a

free_connection_partially(): Avoid possible use-after-free for c->hischallenge
---

diff --git a/src/connection.c b/src/connection.c
index dd524486..6fdd2bc4 100644
--- a/src/connection.c
+++ b/src/connection.c
@@ -64,8 +64,10 @@ void free_connection_partially(connection_t *c) {
 	ecdsa_free(&c->ecdsa);
 	rsa_free(&c->rsa);
 
-	if(c->hischallenge)
+	if(c->hischallenge) {
 		free(c->hischallenge);
+		c->hischallenge = NULL;
+	}
 
 	buffer_clear(&c->inbuf);
 	buffer_clear(&c->outbuf);