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Handle GlyphDirectory as an array

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Upstream BZ: http://bugs.ghostscript.com/show_bug.cgi?id=697286
This commit is contained in:
David Kaspar [Dee'Kej] 2016-11-03 16:58:02 +01:00
parent a890cdf30f
commit f2fcc98430
2 changed files with 61 additions and 1 deletions
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52
ghostscript-9.20-handle-glyphdirectory-correctly.patch Normal file
View File

@ -0,0 +1,52 @@
From 329e0a6d187cc5b5698689d76636ed3214d7efa7 Mon Sep 17 00:00:00 2001
From: Chris Liddell <chris.liddell@artifex.com>
Date: Thu, 3 Nov 2016 13:09:27 +0000
Subject: [PATCH] Bug 697286: handle GlyphDirectory as an array
For high level devices that need to copy CIDFonts, we need to establish the
highest CID in a given CIDFont. If the font has a GlyphDirectory dictionary
the only way to do so is to iterate through the keys to find the highest.
The code handling this ignored that the GlyphDirectory could be an array,
which confused the dictionary content iterator, and caused a segfault.
In the case of an array, set the high CID to the highest index available in the
array.
---
psi/zfcid.c | 18 +++++++++++-------
1 file changed, 11 insertions(+), 7 deletions(-)
diff --git a/psi/zfcid.c b/psi/zfcid.c
index ce583af..3098a22 100644
--- a/psi/zfcid.c
+++ b/psi/zfcid.c
@@ -76,15 +76,19 @@ cid_font_data_param(os_ptr op, gs_font_cid_data *pdata, ref *pGlyphDirectory)
* the number of CIDs in the font. We need to know the maximum CID
* when copying fonts, so calculate and store it now.
*/
- index = dict_first(pgdir);
- while (index >= 0) {
- index = dict_next(pgdir, index, (ref *)&element);
- if (index >= 0) {
- if (element[0].value.intval > pdata->MaxCID)
- pdata->MaxCID = element[0].value.intval;
+ if (r_has_type(pgdir, t_dictionary)) {
+ index = dict_first(pgdir);
+ while (index >= 0) {
+ index = dict_next(pgdir, index, (ref *)&element);
+ if (index >= 0) {
+ if (element[0].value.intval > pdata->MaxCID)
+ pdata->MaxCID = element[0].value.intval;
+ }
}
}
-
+ else {
+ pdata->MaxCID = r_size(pgdir) - 1;
+ }
return code;
} else {
return_error(gs_error_typecheck);
--
2.7.4

10
ghostscript.spec
View File

@ -5,7 +5,7 @@ Summary: A PostScript interpreter and renderer
Name: ghostscript
Version: %{gs_ver}
Release: 4%{?dist}
Release: 5%{?dist}
# Included CMap data is Redistributable, no modification permitted,
# see http://bugzilla.redhat.com/487510
@ -20,6 +20,7 @@ Patch1: ghostscript-9.20-fix-openjpeg-system-build.patch
Patch2: ghostscript-9.20-runlibfileifexists.patch
Patch3: ghostscript-9.20-run-dvipdf-securely.patch
Patch4: ghostscript-9.20-urw-fonts-naming.patch
Patch10: ghostscript-9.20-handle-glyphdirectory-correctly.patch
# Security patches:
Patch5: ghostscript-9.20-cve-2016-7979.patch
@ -143,6 +144,9 @@ rm -rf expat freetype icclib jasper jpeg jpegxr lcms lcms2 libpng openjpeg zlib
# Honor -dSAFER in .libfile (bug #1380415):
%patch9 -p1
# handle GlyphDirectory as an array (http://bugs.ghostscript.com/show_bug.cgi?id=697286):
%patch10 -p1
# Convert manual pages to UTF-8
from8859_1() {
iconv -f iso-8859-1 -t utf-8 < "$1" > "${1}_"
@ -339,6 +343,10 @@ rm -rf $RPM_BUILD_ROOT
%{_libdir}/libgs.so
%changelog
* Thu Nov 3 2016 David Kaspar [Dee'Kej] <dkaspar@redhat.com> - 9.20-5
- Added fix to avoid SIGSEGV for some *.ps files. More info here:
<http://bugs.ghostscript.com/show_bug.cgi?id=697286>
* Tue Nov 1 2016 David Kaspar [Dee'Kej] <dkaspar@redhat.com> - 9.20-4
- Added security fix for CVE-2016-7977 (bug #1380415)