From aec4aac98ff636dbbfabcc8f3e61c40fd1532283 Mon Sep 17 00:00:00 2001
From: gio <gio@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Thu, 30 Jul 2015 06:27:41 +0000
Subject: [PATCH] Fixed possible stack overflow with special crafted input
 discovered by bonsaiviking with fuzzing

---
 nmap_dns.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nmap_dns.cc b/nmap_dns.cc
index 1d67f3c6c..6ec162f0c 100644
--- a/nmap_dns.cc
+++ b/nmap_dns.cc
@@ -1514,7 +1514,7 @@ size_t DNS::Factory::parseDomainName(std::string &name, const char *buf, size_t
       u16 real_offset;
       DNS_CHECK_ACCUMLATE(ret, tmp, parseUnsignedShort(real_offset, buf, offset+ret, maxlen));
       real_offset -= COMPRESSED_NAME<<8;
-      if( real_offset < maxlen)
+      if( real_offset < offset)
       {
         std::string val;
         DNS_CHECK_ACCUMLATE(tmp, tmp, parseDomainName(val, buf, real_offset, maxlen));