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From 5fa3165613b77b516e2b0dc128f73b673bd3ec8b 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
Upstream-Status: Backport [https://git.gnome.org/browse/libcroco/patch/?id=9ad72875e9f08e4c519ef63d44cdbd94aa9504f7]
CVE: CVE-2017-7961
Signed-off-by: Sinan Kaya <okaya@kernel.org>
---
src/cr-tknzr.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/src/cr-tknzr.c b/src/cr-tknzr.c
index e3af0ee..76886ec 100644
--- a/src/cr-tknzr.c
+++ b/src/cr-tknzr.c
@@ -1280,6 +1280,11 @@ 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;
@@ -1299,6 +1304,11 @@ 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);
--
2.19.0
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