From fb40481030e52602cba45374400dc2bd1288ff7a Mon Sep 17 00:00:00 2001
From: akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 9 Nov 2015 15:37:04 +0000
Subject: * lib/resolv.rb (Resolv::DNS::Message::MessageEncoder#put_labels):  
 Prevent overflow of pointer to labels.   Patch by Hannes Georg. 
 [ruby-core:71248] [Bug #11632]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52508 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/resolv.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'lib/resolv.rb')

diff --git a/lib/resolv.rb b/lib/resolv.rb
index a5eb9fe55f..17c832037f 100644
--- a/lib/resolv.rb
+++ b/lib/resolv.rb
@@ -1477,7 +1477,9 @@ class Resolv
               self.put_pack("n", 0xc000 | idx)
               return
             else
-              @names[domain] = @data.length
+              if @data.length < 0x4000
+                @names[domain] = @data.length
+              end
               self.put_label(d[i])
             end
           }
-- 
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