Fix int overflow

0001-Bug-697693-Prevent-SEGV-due-to-integer-overflow.patch

@@ -0,0 +1,31 @@
+From f8992b8fe65c170c8624226f127c5c4bfed42c66 Mon Sep 17 00:00:00 2001
+From: Shailesh Mistry <shailesh.mistry@hotmail.co.uk>
+Date: Wed, 26 Apr 2017 22:12:14 +0100
+Subject: [PATCH] Bug 697693: Prevent SEGV due to integer overflow.
+
+While building a Huffman table, the start and end points were susceptible
+to integer overflow.
+
+Thank you to Jiaqi for finding this issue and suggesting a patch.
+---
+ jbig2_huffman.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/jbig2_huffman.c b/jbig2_huffman.c
+index 511e461..b4189a1 100644
+--- a/jbig2_huffman.c
++++ b/jbig2_huffman.c
+@@ -421,8 +421,8 @@ jbig2_build_huffman_table(Jbig2Ctx *ctx, const Jbig2HuffmanParams *params)
+ 
+             if (PREFLEN == CURLEN) {
+                 int RANGELEN = lines[CURTEMP].RANGELEN;
+-                int start_j = CURCODE << shift;
+-                int end_j = (CURCODE + 1) << shift;
++                uint32_t start_j = CURCODE << shift;
++                uint32_t end_j = (CURCODE + 1) << shift;
+                 byte eflags = 0;
+ 
+                 if (end_j > max_j) {
+-- 
+2.9.3
+

jbig2dec.spec

@@ -1,13 +1,13 @@
 Name:           jbig2dec
 Version:        0.13
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        A decoder implementation of the JBIG2 image compression format 
 
 Group:          System Environment/Libraries
 License:        GPLv2
 URL:            http://jbig2dec.sourceforge.net/
 Source0:        http://ghostscript.com/~giles/jbig2/jbig2dec/%{name}-%{version}.tar.gz
-Patch0:         %{name}_arm64.patch
+Patch1:         0001-Bug-697693-Prevent-SEGV-due-to-integer-overflow.patch
 BuildRequires:  libtool
 
 %description
@@ -48,7 +48,7 @@ which requires the jbig2dec library.
 
 %prep
 %setup -q
-##%patch0 -p1 
+%patch1 -p1 
 
 
 %build
@@ -85,6 +85,9 @@ rm -f %{buildroot}%{_libdir}/*.la
 
 
 %changelog
+* Wed May  3 2017 Pavel Zhukov <pzhukov@redhat.com> - 0.13-2
+- Prevent segserv due to int overflow
+
 * Tue Mar 07 2017  Pavel Zhukov <landgraf@fedoraproject.org> - 0.13-1
 - New release 0.13