diff --git a/zutils-1.7-zcat-buffer-overrun.patch b/zutils-1.7-zcat-buffer-overrun.patch
new file mode 100644
index 0000000..89cc490
--- /dev/null
+++ b/zutils-1.7-zcat-buffer-overrun.patch
@@ -0,0 +1,18 @@
+Author: Antonio Diaz Diaz <antonio@gnu.org>
+Description: zcat.cc: Fixed a buffer overrun on outbuf when '-v' is used.
+
+diff -Naurp zutils/zcat.cc zutils/zcat.cc
+--- zutils/zcat.cc
++++ zutils/zcat.cc
+@@ -232,8 +232,9 @@ int cat( int infd, const int format_inde
+   enum { buffer_size = 4096 };
+   // buffer with space for sentinel newline at the end
+   uint8_t * const inbuf = new uint8_t[buffer_size+1];
+-  // buffer with space for character quoting and 255-digit line number
+-  uint8_t * const outbuf = new uint8_t[(4*buffer_size)+256];
++  // buffer with space for character quoting, 255-digit line number and
++  // worst case flushing respect to inbuf.
++  uint8_t * const outbuf = new uint8_t[(5*buffer_size)+256];
+   int retval = 0;
+   Children children;
+   if( !set_data_feeder( input_filename, &infd, children, format_index ) )
diff --git a/zutils.changes b/zutils.changes
index ba94bae..9ebfbd1 100644
--- a/zutils.changes
+++ b/zutils.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Mon Aug  6 10:29:51 UTC 2018 - aloisio@gmx.com
+
+- Added zutils-1.7-zcat-buffer-overrun.patch (fixes boo#1103878)
+
 -------------------------------------------------------------------
 Sat Jul 14 08:27:03 UTC 2018 - antoine.belvire@opensuse.org
 
diff --git a/zutils.spec b/zutils.spec
index fe870d2..87c7246 100644
--- a/zutils.spec
+++ b/zutils.spec
@@ -26,6 +26,8 @@ URL:            https://www.nongnu.org/zutils/zutils.html
 Source0:        https://download.savannah.gnu.org/releases/zutils/zutils-%{version}.tar.lz
 Source1:        https://download.savannah.gnu.org/releases/zutils/zutils-%{version}.tar.lz.sig
 Source2:        %{name}.keyring
+# PATCH-FIX-UPSTREAM zutils-1.7-zcat-buffer-overrun.patch
+Patch0:         zutils-1.7-zcat-buffer-overrun.patch
 BuildRequires:  gcc-c++
 BuildRequires:  lzip
 Requires(post): %{install_info_prereq}
@@ -44,6 +46,7 @@ in those utilities supporting it.
 
 %prep
 %setup -q
+%patch0 -p1
 
 %build
 %configure