gnu: gnome-shell: Fix CVE-2017-8288.

* gnu/packages/patches/gnome-shell-CVE-2017-8288.patch:	New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/gnome.scm (gnome-shell)[source]: Use it.

Co-authored-by: Leo Famulari <leo@famulari.name>

gnu/local.mk

@@ -627,6 +627,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/glog-gcc-5-demangling.patch		\
   %D%/packages/patches/gmp-arm-asm-nothumb.patch		\
   %D%/packages/patches/gmp-faulty-test.patch			\
+  %D%/packages/patches/gnome-shell-CVE-2017-8288.patch		\
   %D%/packages/patches/gnome-tweak-tool-search-paths.patch	\
   %D%/packages/patches/gnucash-price-quotes-perl.patch		\
   %D%/packages/patches/gobject-introspection-absolute-shlib-path.patch \

gnu/packages/gnome.scm

@@ -12,7 +12,7 @@
 ;;; Copyright © 2015, 2016, 2017 Mark H Weaver <mhw@netris.org>
 ;;; Copyright © 2015 David Thompson <davet@gnu.org>
 ;;; Copyright © 2015, 2016 Efraim Flashner <efraim@flashner.co.il>
-;;; Copyright © 2016 Rene Saavedra <rennes@openmailbox.org>
+;;; Copyright © 2016, 2017 Rene Saavedra <rennes@openmailbox.org>
 ;;; Copyright © 2016 Jochem Raat <jchmrt@riseup.net>
 ;;; Copyright © 2016 Kei Kebreau <kei@openmailbox.org>
 ;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
@@ -5000,6 +5000,7 @@ properties, screen resolution, and other GNOME parameters.")
               (uri (string-append "mirror://gnome/sources/" name "/"
                                   (version-major+minor version) "/"
                                   name "-" version ".tar.xz"))
+              (patches (search-patches "gnome-shell-CVE-2017-8288.patch"))
               (sha256
                (base32
                 "16smvjfrpyfphv479hjky5261hgl4kli4q86bcb2b8xdcav4w3yq"))))

gnu/packages/patches/gnome-shell-CVE-2017-8288.patch

@@ -0,0 +1,54 @@
+Fix CVE-2017-8288:
+
+https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8288
+http://seclists.org/oss-sec/2017/q2/136
+
+Patch copied from upstream source repository:
+
+https://git.gnome.org/browse/gnome-shell/commit/?id=ff425d1db7082e2755d2a405af53861552acf2a1
+
+From ff425d1db7082e2755d2a405af53861552acf2a1 Mon Sep 17 00:00:00 2001
+From: Emilio Pozuelo Monfort <pochu27@gmail.com>
+Date: Tue, 25 Apr 2017 17:27:42 +0200
+Subject: extensionSystem: handle reloading broken extensions
+
+Some extensions out there may fail to reload. When that happens,
+we need to catch any exceptions so that we don't leave things in
+a broken state that could lead to leaving extensions enabled in
+the screen shield.
+
+https://bugzilla.gnome.org/show_bug.cgi?id=781728
+---
+ js/ui/extensionSystem.js | 12 ++++++++++--
+ 1 file changed, 10 insertions(+), 2 deletions(-)
+
+diff --git a/js/ui/extensionSystem.js b/js/ui/extensionSystem.js
+index a4dc29e..fc352b8 100644
+--- a/js/ui/extensionSystem.js
++++ b/js/ui/extensionSystem.js
+@@ -282,12 +282,20 @@ function _onVersionValidationChanged() {
+     // temporarily disable them all
+     enabledExtensions = [];
+     for (let uuid in ExtensionUtils.extensions)
+-        reloadExtension(ExtensionUtils.extensions[uuid]);
++        try {
++            reloadExtension(ExtensionUtils.extensions[uuid]);
++        } catch(e) {
++            logExtensionError(uuid, e);
++        }
+     enabledExtensions = getEnabledExtensions();
+ 
+     if (Main.sessionMode.allowExtensions) {
+         enabledExtensions.forEach(function(uuid) {
+-            enableExtension(uuid);
++            try {
++                enableExtension(uuid);
++            } catch(e) {
++                logExtensionError(uuid, e);
++            }
+         });
+     }
+ }
+-- 
+cgit v0.12
+