libcroco: fix CVE-2017-7961

(From OE-Core rev: 480f15850820746cecdfe0b8450b2be484c1f8f9)

(From OE-Core rev: f5cf064b3c138c8a6591d34f40253e10a6f01a14)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-support/libcroco/libcroco/CVE-2017-7961.patch

@@ -0,0 +1,45 @@
+CVE: CVE-2017-7961
+Upstream-Status: Backport
+Signed-off-by: Ross Burton <ross.burton@intel.com>
+
+From 9ad72875e9f08e4c519ef63d44cdbd94aa9504f7 Mon Sep 17 00:00:00 2001
+From: Ignacio Casal Quinteiro <qignacio@amazon.com>
+Date: Sun, 16 Apr 2017 13:56:09 +0200
+Subject: [PATCH] tknzr: support only max long rgb values
+
+This fixes a possible out of bound when reading rgbs which
+are longer than the support MAXLONG
+---
+ src/cr-tknzr.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+diff --git a/src/cr-tknzr.c b/src/cr-tknzr.c
+index 1a7cfeb..1548c35 100644
+--- a/src/cr-tknzr.c
++++ b/src/cr-tknzr.c
+@@ -1279,6 +1279,11 @@ cr_tknzr_parse_rgb (CRTknzr * a_this, CRRgb ** a_rgb)
+         status = cr_tknzr_parse_num (a_this, &num);
+         ENSURE_PARSING_COND ((status == CR_OK) && (num != NULL));
+ 
++        if (num->val > G_MAXLONG) {
++                status = CR_PARSING_ERROR;
++                goto error;
++        }
++
+         red = num->val;
+         cr_num_destroy (num);
+         num = NULL;
+@@ -1298,6 +1303,11 @@ cr_tknzr_parse_rgb (CRTknzr * a_this, CRRgb ** a_rgb)
+                 status = cr_tknzr_parse_num (a_this, &num);
+                 ENSURE_PARSING_COND ((status == CR_OK) && (num != NULL));
+ 
++                if (num->val > G_MAXLONG) {
++                        status = CR_PARSING_ERROR;
++                        goto error;
++                }
++
+                 PEEK_BYTE (a_this, 1, &next_bytes[0]);
+                 if (next_bytes[0] == '%') {
+                         SKIP_CHARS (a_this, 1);
+-- 
+2.18.1

meta/recipes-support/libcroco/libcroco_0.6.12.bb

@@ -16,7 +16,9 @@ BINCONFIG = "${bindir}/croco-0.6-config"
 
 inherit gnomebase gtk-doc binconfig-disabled
 
-SRC_URI += "file://CVE-2017-7960.patch"
+SRC_URI += "file://CVE-2017-7960.patch \
+            file://CVE-2017-7961.patch \
+            "
 
 SRC_URI[archive.md5sum] = "bc0984fce078ba2ce29f9500c6b9ddce"
 SRC_URI[archive.sha256sum] = "ddc4b5546c9fb4280a5017e2707fbd4839034ed1aba5b7d4372212f34f84f860"