diff --git a/encodeoffbyone.diff b/encodeoffbyone.diff
new file mode 100644
index 0000000..9755ee9
--- /dev/null
+++ b/encodeoffbyone.diff
@@ -0,0 +1,11 @@
+--- ./lib/Net/IDN/Punycode.xs.orig	2014-07-22 13:54:38.988433322 +0000
++++ ./lib/Net/IDN/Punycode.xs	2014-07-22 13:59:25.217074100 +0000
+@@ -138,7 +138,7 @@ encode_punycode(input)
+ 		      q = delta;
+ 
+ 		      for(k = BASE;; k += BASE) {
+-			if(re_p >= re_e) {
++			if(re_p + 1 >= re_e) {
+ 			  length_guess = re_e - re_s + 16;
+ 			  re_e = SvGROW(RETVAL, length_guess);
+ 			  re_p = re_e + (re_p - re_s);
diff --git a/perl-Net-IDN-Encode.changes b/perl-Net-IDN-Encode.changes
index d976660..741ec56 100644
--- a/perl-Net-IDN-Encode.changes
+++ b/perl-Net-IDN-Encode.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Jul 22 16:00:29 CEST 2014 - mls@suse.de
+
+- fix off-by-one error in memory allocation in the punycode encoder
+  new patch: encodeoffbyone.diff
+
 -------------------------------------------------------------------
 Sun Jul 20 07:29:18 UTC 2014 - coolo@suse.com
 
diff --git a/perl-Net-IDN-Encode.spec b/perl-Net-IDN-Encode.spec
index a59bb3d..b5e39d2 100644
--- a/perl-Net-IDN-Encode.spec
+++ b/perl-Net-IDN-Encode.spec
@@ -25,6 +25,7 @@ License:        Artistic-1.0 or GPL-1.0+
 Group:          Development/Libraries/Perl
 Url:            http://search.cpan.org/dist/Net-IDN-Encode/
 Source:         http://www.cpan.org/authors/id/C/CF/CFAERBER/%{cpan_name}-%{version}.tar.gz
+Patch:          encodeoffbyone.diff
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 BuildRequires:  perl
 BuildRequires:  perl-macros
@@ -47,6 +48,7 @@ addresses), using whatever IDNA standard is the best choice at the moment.
 
 %prep
 %setup -q -n %{cpan_name}-%{version}
+%patch
 find . -type f -print0 | xargs -0 chmod 644
 
 %build