diff options
Diffstat (limited to 'gnome-base/gdm/files/3.24.3-CVE-2018-14424.patch')
| -rw-r--r-- | gnome-base/gdm/files/3.24.3-CVE-2018-14424.patch | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/gnome-base/gdm/files/3.24.3-CVE-2018-14424.patch b/gnome-base/gdm/files/3.24.3-CVE-2018-14424.patch new file mode 100644 index 000000000000..4edb0670958f --- /dev/null +++ b/gnome-base/gdm/files/3.24.3-CVE-2018-14424.patch @@ -0,0 +1,163 @@ +From 6060db704a19b0db68f2e9e6a2d020c0c78b6bba Mon Sep 17 00:00:00 2001 +From: Chris Coulson <chris.coulson@canonical.com> +Date: Thu, 19 Jul 2018 18:26:05 +0100 +Subject: [PATCH] display-store: Pass the display object rather than the id in + the removed signal + +By the time GdmDisplayStore emits the "display-removed" signal, the display +is no longer in the store and gdm_display_store_lookup will not work in +signal handlers. + +Change the "display-removed" parameter from the display id to the GdmDisplay +object, so that signal handers can perform any cleanup they need to do + +CVE-2018-14424 + +Closes: https://gitlab.gnome.org/GNOME/gdm/issues/401 +--- + daemon/gdm-display-store.c | 11 +++-------- + daemon/gdm-display-store.h | 2 +- + daemon/gdm-local-display-factory.c | 13 +++---------- + daemon/gdm-manager.c | 19 +++++++++---------- + daemon/gdm-manager.h | 3 ++- + 5 files changed, 18 insertions(+), 30 deletions(-) + +diff --git a/daemon/gdm-display-store.c b/daemon/gdm-display-store.c +index af76f519..fd24334e 100644 +--- a/daemon/gdm-display-store.c ++++ b/daemon/gdm-display-store.c +@@ -76,15 +76,10 @@ stored_display_new (GdmDisplayStore *store, + static void + stored_display_free (StoredDisplay *stored_display) + { +- char *id; +- +- gdm_display_get_id (stored_display->display, &id, NULL); +- + g_signal_emit (G_OBJECT (stored_display->store), + signals[DISPLAY_REMOVED], + 0, +- id); +- g_free (id); ++ stored_display->display); + + g_debug ("GdmDisplayStore: Unreffing display: %p", + stored_display->display); +@@ -281,9 +276,9 @@ gdm_display_store_class_init (GdmDisplayStoreClass *klass) + G_STRUCT_OFFSET (GdmDisplayStoreClass, display_removed), + NULL, + NULL, +- g_cclosure_marshal_VOID__STRING, ++ g_cclosure_marshal_VOID__OBJECT, + G_TYPE_NONE, +- 1, G_TYPE_STRING); ++ 1, G_TYPE_OBJECT); + + g_type_class_add_private (klass, sizeof (GdmDisplayStorePrivate)); + } +diff --git a/daemon/gdm-display-store.h b/daemon/gdm-display-store.h +index 28359933..0aff8ee2 100644 +--- a/daemon/gdm-display-store.h ++++ b/daemon/gdm-display-store.h +@@ -49,7 +49,7 @@ typedef struct + void (* display_added) (GdmDisplayStore *display_store, + const char *id); + void (* display_removed) (GdmDisplayStore *display_store, +- const char *id); ++ GdmDisplay *display); + } GdmDisplayStoreClass; + + typedef enum +diff --git a/daemon/gdm-local-display-factory.c b/daemon/gdm-local-display-factory.c +index b29f5ac5..403921d3 100644 +--- a/daemon/gdm-local-display-factory.c ++++ b/daemon/gdm-local-display-factory.c +@@ -558,18 +558,11 @@ on_display_added (GdmDisplayStore *display_store, + + static void + on_display_removed (GdmDisplayStore *display_store, +- const char *id, ++ GdmDisplay *display, + GdmLocalDisplayFactory *factory) + { +- GdmDisplay *display; +- +- display = gdm_display_store_lookup (display_store, id); +- +- if (display != NULL) { +- g_signal_handlers_disconnect_by_func (display, G_CALLBACK (on_display_status_changed), factory); +- g_object_weak_unref (G_OBJECT (display), (GWeakNotify)on_display_disposed, factory); +- +- } ++ g_signal_handlers_disconnect_by_func (display, G_CALLBACK (on_display_status_changed), factory); ++ g_object_weak_unref (G_OBJECT (display), (GWeakNotify)on_display_disposed, factory); + } + + static gboolean +diff --git a/daemon/gdm-manager.c b/daemon/gdm-manager.c +index 7539acf1..1943d89e 100644 +--- a/daemon/gdm-manager.c ++++ b/daemon/gdm-manager.c +@@ -1700,19 +1700,18 @@ on_display_status_changed (GdmDisplay *display, + + static void + on_display_removed (GdmDisplayStore *display_store, +- const char *id, ++ GdmDisplay *display, + GdmManager *manager) + { +- GdmDisplay *display; ++ char *id; + +- display = gdm_display_store_lookup (display_store, id); +- if (display != NULL) { +- g_dbus_object_manager_server_unexport (manager->priv->object_manager, id); ++ gdm_display_get_id (display, &id, NULL); ++ g_dbus_object_manager_server_unexport (manager->priv->object_manager, id); ++ g_free (id); + +- g_signal_handlers_disconnect_by_func (display, G_CALLBACK (on_display_status_changed), manager); ++ g_signal_handlers_disconnect_by_func (display, G_CALLBACK (on_display_status_changed), manager); + +- g_signal_emit (manager, signals[DISPLAY_REMOVED], 0, id); +- } ++ g_signal_emit (manager, signals[DISPLAY_REMOVED], 0, display); + } + + static void +@@ -2694,9 +2693,9 @@ gdm_manager_class_init (GdmManagerClass *klass) + G_STRUCT_OFFSET (GdmManagerClass, display_removed), + NULL, + NULL, +- g_cclosure_marshal_VOID__STRING, ++ g_cclosure_marshal_VOID__OBJECT, + G_TYPE_NONE, +- 1, G_TYPE_STRING); ++ 1, G_TYPE_OBJECT); + + g_object_class_install_property (object_class, + PROP_XDMCP_ENABLED, +diff --git a/daemon/gdm-manager.h b/daemon/gdm-manager.h +index 41c68a7a..c8fb3f22 100644 +--- a/daemon/gdm-manager.h ++++ b/daemon/gdm-manager.h +@@ -24,6 +24,7 @@ + + #include <glib-object.h> + ++#include "gdm-display.h" + #include "gdm-manager-glue.h" + + G_BEGIN_DECLS +@@ -50,7 +51,7 @@ typedef struct + void (* display_added) (GdmManager *manager, + const char *id); + void (* display_removed) (GdmManager *manager, +- const char *id); ++ GdmDisplay *display); + } GdmManagerClass; + + typedef enum +-- +2.17.1 + |