Add safety guard (CVE-2017-8287)

Resolves: #1446075

freetype-2.7.1-safety-guard.patch

@@ -0,0 +1,36 @@
+From 3774fc08b502c3e685afca098b6e8a195aded6a0 Mon Sep 17 00:00:00 2001
+From: Werner Lemberg <wl@gnu.org>
+Date: Sun, 26 Mar 2017 08:32:09 +0200
+Subject: [PATCH] * src/psaux/psobjs.c (t1_builder_close_contour): Add safety
+ guard.
+
+Reported as
+
+  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=941
+---
+ ChangeLog          | 8 ++++++++
+ src/psaux/psobjs.c | 8 ++++++++
+ 2 files changed, 16 insertions(+)
+
+diff --git a/src/psaux/psobjs.c b/src/psaux/psobjs.c
+index d18e821a..0baf8368 100644
+--- a/src/psaux/psobjs.c
++++ b/src/psaux/psobjs.c
+@@ -1718,6 +1718,14 @@
+     first = outline->n_contours <= 1
+             ? 0 : outline->contours[outline->n_contours - 2] + 1;
+ 
++    /* in malformed fonts it can happen that a contour was started */
++    /* but no points were added                                    */
++    if ( outline->n_contours && first == outline->n_points )
++    {
++      outline->n_contours--;
++      return;
++    }
++
+     /* We must not include the last point in the path if it */
+     /* is located on the first point.                       */
+     if ( outline->n_points > 1 )
+-- 
+2.12.2
+

freetype.spec

@@ -7,7 +7,7 @@
 Summary: A free and portable font rendering engine
 Name: freetype
 Version: 2.7.1
-Release: 5%{?dist}
+Release: 6%{?dist}
 License: (FTL or GPLv2+) and BSD and MIT and Public Domain and zlib with acknowledgement
 Group: System Environment/Libraries
 URL: http://www.freetype.org
@@ -34,6 +34,9 @@ Patch5:  freetype-2.6.5-libtool.patch
 # https://bugzilla.redhat.com/show_bug.cgi?id=1446500
 Patch6:  freetype-2.7.1-protect-flex-handling.patch
 
+# https://bugzilla.redhat.com/show_bug.cgi?id=1446073
+Patch7:  freetype-2.7.1-safety-guard.patch
+
 
 BuildRequires: libX11-devel
 BuildRequires: libpng-devel
@@ -96,6 +99,7 @@ popd
 %patch4 -p1 -b .freetype-config-prefix
 %patch5 -p1 -b .libtool
 %patch6 -p1 -b .protect-flex-handling
+%patch7 -p1 -b .safety-guard
 
 %build
 
@@ -211,6 +215,10 @@ rm -f $RPM_BUILD_ROOT%{_libdir}/*.{a,la}
 %{_mandir}/man1/*
 
 %changelog
+* Tue May  2 2017 Marek Kasik <mkasik@redhat.com> - 2.7.1-6
+- Add safety guard (CVE-2017-8287)
+- Resolves: #1446075
+
 * Tue May  2 2017 Marek Kasik <mkasik@redhat.com> - 2.7.1-5
 - Better protect `flex' handling (CVE-2017-8105)
 - Resolves: #1446502