From ef66ecf2243d5b975afd2448cd4c01583e04b2bf Mon Sep 17 00:00:00 2001
From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Wed, 20 Jan 2016 16:15:19 +0000
Subject: [PATCH] Fix memory corruption on punycode

---
 contrib/librdns/packet.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/contrib/librdns/packet.c b/contrib/librdns/packet.c
index 630413fdb..6ce3f50fa 100644
--- a/contrib/librdns/packet.c
+++ b/contrib/librdns/packet.c
@@ -132,7 +132,7 @@ rdns_format_dns_name (struct rdns_resolver *resolver, const char *in,
 
 	p = in;
 	olen = inlen + 1 + sizeof ("xn--") * labels;
-	*out = malloc (olen);
+	*out = malloc (olen + 1);
 
 	if (*out == NULL) {
 		return false;
@@ -222,6 +222,7 @@ rdns_format_dns_name (struct rdns_resolver *resolver, const char *in,
 			goto err;
 		}
 	}
+
 	*o = '\0';
 
 	*outlen = o - *out;
-- 
2.39.5