gnu: ghostscript: Fix CVE-2019-14869.

* gnu/packages/patches/ghostscript-CVE-2019-14869.patch: New file.
* gnu/local.mk (dist_patch_DATA): Adjust accordingly.
* gnu/packages/ghostscript.scm (ghostscript)[source](patches): Add it.

gnu/local.mk

@@ -910,6 +910,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/ghc-monad-par-fix-tests.patch		\
   %D%/packages/patches/ghc-pandoc-fix-html-tests.patch		\
   %D%/packages/patches/ghc-pandoc-fix-latex-test.patch		\
+  %D%/packages/patches/ghostscript-CVE-2019-14869.patch		\
   %D%/packages/patches/ghostscript-no-header-id.patch		\
   %D%/packages/patches/ghostscript-no-header-uuid.patch		\
   %D%/packages/patches/ghostscript-no-header-creationdate.patch \

gnu/packages/ghostscript.scm

@@ -170,7 +170,8 @@ (define-public ghostscript
         (sha256
          (base32
           "1m770dwc82afdgzgq2kar3120r1lbybm3mssdm79f8kggf0v16yv"))
-        (patches (search-patches "ghostscript-no-header-creationdate.patch"
+        (patches (search-patches "ghostscript-CVE-2019-14869.patch"
+                                 "ghostscript-no-header-creationdate.patch"
                                  "ghostscript-no-header-id.patch"
                                  "ghostscript-no-header-uuid.patch"))
         (modules '((guix build utils)))

gnu/packages/patches/ghostscript-CVE-2019-14869.patch

@@ -0,0 +1,48 @@
+Fix CVE-2019-14869:
+
+https://nvd.nist.gov/vuln/detail/CVE-2019-14869
+
+Patch taken from upstream:
+
+https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=485904772c5f0aa1140032746e5a0abfc40f4cef
+
+diff --git a/Resource/Init/gs_ttf.ps b/Resource/Init/gs_ttf.ps
+index 74043d1..6be8fe9 100644
+--- a/Resource/Init/gs_ttf.ps
++++ b/Resource/Init/gs_ttf.ps
+@@ -1304,7 +1304,7 @@ currentdict /.pickcmap_with_no_xlatmap .undef
+           TTFDEBUG { (\n1 setting alias: ) print dup ==only
+                 ( to be the same as  ) print 2 index //== exec } if
+ 
+-          7 index 2 index 3 -1 roll exch .forceput
++          7 index 2 index 3 -1 roll exch put
+         } forall
+         pop pop pop
+       }
+@@ -1322,7 +1322,7 @@ currentdict /.pickcmap_with_no_xlatmap .undef
+           exch pop
+           TTFDEBUG { (\n2 setting alias: ) print 1 index ==only
+                      ( to use glyph index: ) print dup //== exec } if
+-          5 index 3 1 roll .forceput
++          5 index 3 1 roll put
+           //false
+         }
+         {
+@@ -1339,7 +1339,7 @@ currentdict /.pickcmap_with_no_xlatmap .undef
+         {                            %  CharStrings(dict) isunicode(boolean) cmap(dict) RAGL(dict) gname(name) codep(integer) gindex(integer)
+           TTFDEBUG { (\3 nsetting alias: ) print 1 index ==only
+                 ( to be index: ) print dup //== exec } if
+-          exch pop 5 index 3 1 roll .forceput
++          exch pop 5 index 3 1 roll put
+         }
+         {
+           pop pop
+@@ -1369,7 +1369,7 @@ currentdict /.pickcmap_with_no_xlatmap .undef
+       } ifelse
+     ]
+   TTFDEBUG { (Encoding: ) print dup === flush } if
+-} .bind executeonly odef		% hides .forceput
++} .bind odef
+ 
+ % ---------------- CIDFontType 2 font loading ---------------- %
+