ghostscript: fix several CVEs by adding bounds checking

CVE-2017-9611
CVE-2017-9612
CVE-2017-9739
CVE-2017-9726

(From OE-Core rev: 3e5d80c84f4c141bc3f3193d1db899b0e56993cf)

(From OE-Core rev: 7fe1e9d46954f082af4debfa63cd982558dbf965)

Signed-off-by: Joe Slater <jslater@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 35 insertions, 0 deletions

diff --git a/meta/recipes-extended/ghostscript/ghostscript/CVE-2017-9612.patch b/meta/recipes-extended/ghostscript/ghostscript/CVE-2017-9612.patch
new file mode 100644
index 0000000000..b737cc56bb
--- /dev/null
+++ b/meta/recipes-extended/ghostscript/ghostscript/CVE-2017-9612.patch
@@ -0,0 +1,35 @@
+From 98f6da60b9d463c617e631fc254cf6d66f2e8e3c Mon Sep 17 00:00:00 2001
+From: Chris Liddell <chris.liddell@artifex.com>
+Date: Mon, 12 Jun 2017 13:15:17 +0100
+Subject: [PATCH] Bug 698026: bounds check zone pointers in Ins_IP()
+
+---
+ base/ttinterp.c |    4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+--- end of original header
+
+CVE: CVE-2017-9612
+
+Upstream-Status: Backport [git://git.ghostscript.com/ghostpdl.git]
+
+Signed-off-by: Joe Slater <joe.slater@windriver.com>
+
+diff --git a/base/ttinterp.c b/base/ttinterp.c
+index f6a6d95..e7c9d68 100644
+--- a/base/ttinterp.c
++++ b/base/ttinterp.c
+@@ -4129,7 +4129,9 @@ static int nInstrCount=0;
+     Int         point;
+     (void)args;
+ 
+-    if ( CUR.top < CUR.GS.loop )
++    if ( CUR.top < CUR.GS.loop ||
++         BOUNDS(CUR.GS.rp1, CUR.zp0.n_points) ||
++         BOUNDS(CUR.GS.rp2, CUR.zp1.n_points))
+     {
+       CUR.error = TT_Err_Invalid_Reference;
+       return;
+-- 
+1.7.9.5
+