From b1989c12501e880afab62d3ff961791906fef350 Mon Sep 17 00:00:00 2001
From: Marius Bakke <mbakke@fastmail.com>
Date: Fri, 16 Feb 2018 22:28:58 +0100
Subject: gnu: freetype: Fix CVE-2018-6942.

* gnu/packages/patches/freetype-CVE-2018-6942.patch: New file.
* gnu/local.mk (dist_patch_DATA): Register it.
* gnu/packages/fontutils.scm (freetype)[replacement]: New field.
(freetype/fixed): New variable.
---
 gnu/packages/patches/freetype-CVE-2018-6942.patch | 31 +++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 gnu/packages/patches/freetype-CVE-2018-6942.patch

(limited to 'gnu/packages/patches')

diff --git a/gnu/packages/patches/freetype-CVE-2018-6942.patch b/gnu/packages/patches/freetype-CVE-2018-6942.patch
new file mode 100644
index 0000000000..680f357765
--- /dev/null
+++ b/gnu/packages/patches/freetype-CVE-2018-6942.patch
@@ -0,0 +1,31 @@
+Fix CVE-2018-6942:
+
+https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6942
+https://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-6942.html
+
+Copied from upstream (ChangeLog section removed):
+https://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=29c759284e305ec428703c9a5831d0b1fc3497ef
+
+diff --git a/src/truetype/ttinterp.c b/src/truetype/ttinterp.c
+index d855aaa..551f14a 100644
+--- a/src/truetype/ttinterp.c
++++ b/src/truetype/ttinterp.c
+@@ -7532,8 +7532,16 @@
+       return;
+     }
+ 
+-    for ( i = 0; i < num_axes; i++ )
+-      args[i] = coords[i] >> 2; /* convert 16.16 to 2.14 format */
++    if ( coords )
++    {
++      for ( i = 0; i < num_axes; i++ )
++        args[i] = coords[i] >> 2; /* convert 16.16 to 2.14 format */
++    }
++    else
++    {
++      for ( i = 0; i < num_axes; i++ )
++        args[i] = 0;
++    }
+   }
+ 
+ 
-- 
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