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import gdm-3.28.3-39.el8

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CentOS Sources 2021-05-18 02:47:54 -04:00 committed by Andrew Lukoshko
parent b0e63bee2a
commit 9f0b1f2881
4 changed files with 853 additions and 14 deletions
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140
SOURCES/0001-display-Exit-with-failure-if-loading-existing-users-.patch Normal file
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@ -0,0 +1,140 @@
From e339ad74ca408c665a62bb4bd98dd1ef6caedd20 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marco=20Trevisan=20=28Trevi=C3=B1o=29?= <mail@3v1n0.net>
Date: Tue, 27 Oct 2020 15:14:27 +0100
Subject: [PATCH] display: Exit with failure if loading existing users fails
Given not having users may make GDM to launch initial setup, that
allows to create new users (potentially with sudo capabilities), it's
better to make look_for_existing_users() to return its status and only
if it didn't fail continue the gdm execution.
GHSL-2020-202
CVE-2020-16125
Fixes #642
---
daemon/gdm-display.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/daemon/gdm-display.c b/daemon/gdm-display.c
index 929fa13bd..1b60eb621 100644
--- a/daemon/gdm-display.c
+++ b/daemon/gdm-display.c
@@ -436,106 +436,110 @@ finish_idle (GdmDisplay *self)
static void
queue_finish (GdmDisplay *self)
{
if (self->priv->finish_idle_id == 0) {
self->priv->finish_idle_id = g_idle_add ((GSourceFunc)finish_idle, self);
}
}
static void
_gdm_display_set_status (GdmDisplay *self,
int status)
{
if (status != self->priv->status) {
self->priv->status = status;
g_object_notify (G_OBJECT (self), "status");
}
}
static gboolean
gdm_display_real_prepare (GdmDisplay *self)
{
g_return_val_if_fail (GDM_IS_DISPLAY (self), FALSE);
g_debug ("GdmDisplay: prepare display");
_gdm_display_set_status (self, GDM_DISPLAY_PREPARED);
return TRUE;
}
-static void
+static gboolean
look_for_existing_users_sync (GdmDisplay *self)
{
g_autoptr (GVariant) result = NULL;
g_autoptr (GVariant) result_child = NULL;
g_autoptr (GError) error = NULL;
gboolean has_no_users = FALSE;
result = g_dbus_connection_call_sync (self->priv->connection,
"org.freedesktop.Accounts",
"/org/freedesktop/Accounts",
"org.freedesktop.DBus.Properties",
"Get",
g_variant_new ("(ss)", "org.freedesktop.Accounts", "HasNoUsers"),
G_VARIANT_TYPE ("(v)"),
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
&error);
if (result == NULL) {
- g_warning ("Failed to contact accountsservice: %s", error->message);
- return;
+ g_critical ("Failed to contact accountsservice: %s", error->message);
+ goto out;
}
g_variant_get (result, "(v)", &result_child);
has_no_users = g_variant_get_boolean (result_child);
self->priv->have_existing_user_accounts = !has_no_users;
g_debug ("GdmDisplay: machine does %shave existing user accounts",
has_no_users? "not " : "");
+out:
+ return result != NULL;
}
gboolean
gdm_display_prepare (GdmDisplay *self)
{
gboolean ret;
g_return_val_if_fail (GDM_IS_DISPLAY (self), FALSE);
g_debug ("GdmDisplay: Preparing display: %s", self->priv->id);
/* FIXME: we should probably do this in a more global place,
* asynchronously
*/
- look_for_existing_users_sync (self);
+ if (!look_for_existing_users_sync (self)) {
+ exit (EXIT_FAILURE);
+ }
self->priv->doing_initial_setup = wants_initial_setup (self);
g_object_ref (self);
ret = GDM_DISPLAY_GET_CLASS (self)->prepare (self);
g_object_unref (self);
return ret;
}
gboolean
gdm_display_manage (GdmDisplay *self)
{
gboolean res;
g_return_val_if_fail (GDM_IS_DISPLAY (self), FALSE);
g_debug ("GdmDisplay: Managing display: %s", self->priv->id);
/* If not explicitly prepared, do it now */
if (self->priv->status == GDM_DISPLAY_UNMANAGED) {
res = gdm_display_prepare (self);
if (! res) {
return FALSE;
}
}
if (g_strcmp0 (self->priv->session_class, "greeter") == 0) {
if (GDM_DISPLAY_GET_CLASS (self)->manage != NULL) {
GDM_DISPLAY_GET_CLASS (self)->manage (self);
--
2.28.0

683
SOURCES/0001-session-worker-Don-t-switch-back-VTs-until-session-i.patch Normal file
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@ -0,0 +1,683 @@
From 3864af1ea06d2125c1b1f5afa6fc12caa833980a Mon Sep 17 00:00:00 2001
From: Ray Strode <rstrode@redhat.com>
Date: Thu, 10 Dec 2020 15:14:20 -0500
Subject: [PATCH] session-worker: Don't switch back VTs until session is fully
exited
There's a race condition on shutdown where the session worker is
switching VTs back to the initial VT at the same time as the session
exit is being processed.
This means that manager may try to start a login screen (because of
the VT switch) when autologin is enabled when there shouldn't be a
login screen.
This commit makes sure both the PostSession script, and session-exited
signal emission are complete before initiating the VT switch back
to the initial VT.
https://gitlab.gnome.org/GNOME/gdm/-/issues/660
---
daemon/Makefile.am | 12 +++++
daemon/gdm-session-worker.c | 93 +++++++++++++++++++++++++++------
daemon/org.freedesktop.DBus.xml | 12 +++++
3 files changed, 101 insertions(+), 16 deletions(-)
create mode 100644 daemon/org.freedesktop.DBus.xml
diff --git a/daemon/Makefile.am b/daemon/Makefile.am
index 86a8ee32f..b323f6455 100644
--- a/daemon/Makefile.am
+++ b/daemon/Makefile.am
@@ -7,83 +7,92 @@ AM_CPPFLAGS = \
-I$(top_srcdir)/pam-extensions \
-I$(top_builddir)/common \
-DBINDIR=\"$(bindir)\" \
-DDATADIR=\"$(datadir)\" \
-DDMCONFDIR=\"$(dmconfdir)\" \
-DGDMCONFDIR=\"$(gdmconfdir)\" \
-DLIBDIR=\"$(libdir)\" \
-DLIBEXECDIR=\"$(libexecdir)\" \
-DLOCALSTATEDIR=\"$(localstatedir)\" \
-DLOGDIR=\"$(logdir)\" \
-DSBINDIR=\"$(sbindir)\" \
-DSYSCONFDIR=\"$(sysconfdir)\" \
-DGNOMELOCALEDIR=\""$(datadir)/locale"\" \
-DGDM_RUN_DIR=\"$(GDM_RUN_DIR)\" \
-DGDM_XAUTH_DIR=\"$(GDM_XAUTH_DIR)\" \
-DGDM_SCREENSHOT_DIR=\"$(GDM_SCREENSHOT_DIR)\" \
-DGDM_CACHE_DIR=\""$(localstatedir)/cache/gdm"\" \
-DGDM_SESSION_DEFAULT_PATH=\"$(GDM_SESSION_DEFAULT_PATH)\" \
$(DISABLE_DEPRECATED_CFLAGS) \
$(DAEMON_CFLAGS) \
$(XLIB_CFLAGS) \
$(WARN_CFLAGS) \
$(DEBUG_CFLAGS) \
$(SYSTEMD_CFLAGS) \
$(JOURNALD_CFLAGS) \
$(LIBSELINUX_CFLAGS) \
-DLANG_CONFIG_FILE=\"$(LANG_CONFIG_FILE)\" \
$(NULL)
BUILT_SOURCES = \
+ gdm-dbus-glue.h \
gdm-display-glue.h \
gdm-manager-glue.h \
gdm-local-display-glue.h \
gdm-local-display-factory-glue.h \
gdm-session-glue.h \
gdm-session-worker-glue.h \
gdm-session-enum-types.h \
gdm-session-worker-enum-types.h \
com.redhat.AccountsServiceUser.System.h \
$(NULL)
gdm-session-enum-types.h: gdm-session-enum-types.h.in gdm-session.h
$(AM_V_GEN) glib-mkenums --template $^ > $@
gdm-session-enum-types.c: gdm-session-enum-types.c.in gdm-session.h
$(AM_V_GEN) glib-mkenums --template $^ > $@
gdm-session-worker-enum-types.h: gdm-session-worker-enum-types.h.in gdm-session-worker.h
$(AM_V_GEN) glib-mkenums --template $^ > $@
gdm-session-worker-enum-types.c: gdm-session-worker-enum-types.c.in gdm-session-worker.h
$(AM_V_GEN) glib-mkenums --template $^ > $@
+gdm-dbus-glue.c gdm-dbus-glue.h: org.freedesktop.DBus.xml Makefile.am
+ $(AM_V_GEN)gdbus-codegen \
+ --c-namespace=GdmDBus \
+ --interface-prefix=org.freedesktop.DBus \
+ --generate-c-code=gdm-dbus-glue \
+ --c-generate-autocleanup=all \
+ $(srcdir)/org.freedesktop.DBus.xml
+
gdm-display-glue.c gdm-display-glue.h: gdm-display.xml Makefile.am
$(AM_V_GEN)gdbus-codegen \
--c-namespace=GdmDBus \
--interface-prefix=org.gnome.DisplayManager \
--generate-c-code=gdm-display-glue \
$(srcdir)/gdm-display.xml
gdm-local-display-glue.c gdm-local-display-glue.h: gdm-local-display.xml Makefile.am
$(AM_V_GEN)gdbus-codegen \
--c-namespace=GdmDBus \
--interface-prefix=org.gnome.DisplayManager \
--generate-c-code=gdm-local-display-glue \
$(srcdir)/gdm-local-display.xml
gdm-local-display-factory-glue.c gdm-local-display-factory-glue.h : gdm-local-display-factory.xml Makefile.am
$(AM_V_GEN)gdbus-codegen \
--c-namespace=GdmDBus \
--interface-prefix=org.gnome.DisplayManager \
--generate-c-code=gdm-local-display-factory-glue \
$(srcdir)/gdm-local-display-factory.xml
gdm-manager-glue.c gdm-manager-glue.h : gdm-manager.xml Makefile.am
$(AM_V_GEN)gdbus-codegen \
--c-namespace=GdmDBus \
--interface-prefix=org.gnome.DisplayManager \
--generate-c-code=gdm-manager-glue \
$(srcdir)/gdm-manager.xml
gdm-session-glue.c gdm-session-glue.h : gdm-session.xml Makefile.am
$(AM_V_GEN)gdbus-codegen \
@@ -130,60 +139,62 @@ libexec_PROGRAMS = \
gdm-wayland-session \
gdm-x-session \
$(NULL)
gdm_session_worker_SOURCES = \
session-worker-main.c \
com.redhat.AccountsServiceUser.System.h \
com.redhat.AccountsServiceUser.System.c \
gdm-session.c \
gdm-session.h \
gdm-session-settings.h \
gdm-session-settings.c \
gdm-session-auditor.h \
gdm-session-auditor.c \
gdm-session-record.c \
gdm-session-record.h \
gdm-session-worker.h \
gdm-session-worker.c \
gdm-session-worker-job.c \
gdm-session-worker-common.c \
gdm-session-worker-common.h \
gdm-dbus-util.c \
gdm-dbus-util.h \
$(NULL)
if SUPPORTS_PAM_EXTENSIONS
gdm_session_worker_SOURCES += $(top_srcdir)/pam-extensions/gdm-pam-extensions.h
endif
nodist_gdm_session_worker_SOURCES = \
+ gdm-dbus-glue.h \
+ gdm-dbus-glue.c \
gdm-session-glue.h \
gdm-session-glue.c \
gdm-session-worker-glue.c \
gdm-session-worker-glue.h \
gdm-session-enum-types.c \
gdm-session-worker-enum-types.c \
gdm-session-enum-types.h \
$(NULL)
gdm_wayland_session_LDADD = \
$(top_builddir)/common/libgdmcommon.la \
$(GTK_LIBS) \
$(COMMON_LIBS) \
$(SYSTEMD_LIBS) \
$(NULL)
gdm_wayland_session_SOURCES = \
gdm-manager-glue.h \
gdm-manager-glue.c \
gdm-wayland-session.c \
$(NULL)
gdm_x_session_LDADD = \
$(top_builddir)/common/libgdmcommon.la \
$(GTK_LIBS) \
$(COMMON_LIBS) \
$(SYSTEMD_LIBS) \
$(XLIB_LIBS) \
$(NULL)
@@ -271,50 +282,51 @@ nodist_gdm_SOURCES = \
XDMCP_SOURCES = \
gdm-xdmcp-display-factory.c \
gdm-xdmcp-display-factory.h \
gdm-xdmcp-display.c \
gdm-xdmcp-display.h \
gdm-xdmcp-chooser-display.c \
gdm-xdmcp-chooser-display.h \
$(NULL)
if XDMCP_SUPPORT
gdm_SOURCES += $(XDMCP_SOURCES)
endif
EXTRA_gdm_SOURCES = \
$(XDMCP_SOURCES) \
$(NULL)
gdm_LDADD = \
$(top_builddir)/common/libgdmcommon.la \
$(XLIB_LIBS) \
$(DAEMON_LIBS) \
$(XDMCP_LIBS) \
$(LIBWRAP_LIBS) \
$(SYSTEMD_LIBS) \
$(JOURNALD_LIBS) \
$(EXTRA_DAEMON_LIBS) \
$(NULL)
CLEANFILES = \
+ gdm-dbus-glue.c \
gdm-display-glue.c \
gdm-local-display-factory-glue.c \
gdm-manager-glue.c \
gdm-session-glue.c \
gdm-session-worker-glue.c \
gdm-session-enum-types.c \
gdm-local-display-glue.c \
$(BUILT_SOURCES) \
$(NULL)
EXTRA_DIST = \
gdm-manager.xml \
gdm-session-worker.xml \
gdm-session.xml \
gdm-display.xml \
gdm-local-display.xml \
gdm-local-display-factory.xml \
gdm-session-enum-types.c.in \
gdm-session-enum-types.h.in \
$(NULL)
diff --git a/daemon/gdm-session-worker.c b/daemon/gdm-session-worker.c
index 42c415837..c1b2c1765 100644
--- a/daemon/gdm-session-worker.c
+++ b/daemon/gdm-session-worker.c
@@ -39,60 +39,61 @@
#ifdef HAVE_LOGINCAP
#include <login_cap.h>
#endif
#include <glib.h>
#include <glib/gi18n.h>
#include <glib/gstdio.h>
#include <glib-object.h>
#include <gio/gio.h>
#include <X11/Xauth.h>
#include <systemd/sd-daemon.h>
#ifdef ENABLE_SYSTEMD_JOURNAL
#include <systemd/sd-journal.h>
#endif
#ifdef HAVE_SELINUX
#include <selinux/selinux.h>
#endif /* HAVE_SELINUX */
#include "gdm-common.h"
#include "gdm-log.h"
#ifdef SUPPORTS_PAM_EXTENSIONS
#include "gdm-pam-extensions.h"
#endif
+#include "gdm-dbus-glue.h"
#include "gdm-session-worker.h"
#include "gdm-session-glue.h"
#include "gdm-session.h"
#if defined (HAVE_ADT)
#include "gdm-session-solaris-auditor.h"
#elif defined (HAVE_LIBAUDIT)
#include "gdm-session-linux-auditor.h"
#else
#include "gdm-session-auditor.h"
#endif
#include "gdm-session-settings.h"
#define GDM_SESSION_WORKER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GDM_TYPE_SESSION_WORKER, GdmSessionWorkerPrivate))
#define GDM_SESSION_DBUS_PATH "/org/gnome/DisplayManager/Session"
#define GDM_SESSION_DBUS_NAME "org.gnome.DisplayManager.Session"
#define GDM_SESSION_DBUS_ERROR_CANCEL "org.gnome.DisplayManager.Session.Error.Cancel"
#define GDM_WORKER_DBUS_PATH "/org/gnome/DisplayManager/Worker"
#ifndef GDM_PASSWD_AUXILLARY_BUFFER_SIZE
#define GDM_PASSWD_AUXILLARY_BUFFER_SIZE 1024
#endif
#ifndef GDM_SESSION_DEFAULT_PATH
#define GDM_SESSION_DEFAULT_PATH "/usr/local/bin:/usr/bin:/bin"
#endif
@@ -1028,72 +1029,60 @@ gdm_session_worker_set_state (GdmSessionWorker *worker,
static void
gdm_session_worker_uninitialize_pam (GdmSessionWorker *worker,
int status)
{
g_debug ("GdmSessionWorker: uninitializing PAM");
if (worker->priv->pam_handle == NULL)
return;
gdm_session_worker_get_username (worker, NULL);
if (worker->priv->state >= GDM_SESSION_WORKER_STATE_SESSION_OPENED) {
pam_close_session (worker->priv->pam_handle, 0);
gdm_session_auditor_report_logout (worker->priv->auditor);
} else {
gdm_session_auditor_report_login_failure (worker->priv->auditor,
status,
pam_strerror (worker->priv->pam_handle, status));
}
if (worker->priv->state >= GDM_SESSION_WORKER_STATE_ACCREDITED) {
pam_setcred (worker->priv->pam_handle, PAM_DELETE_CRED);
}
pam_end (worker->priv->pam_handle, status);
worker->priv->pam_handle = NULL;
gdm_session_worker_stop_auditor (worker);
- /* If user-display-server is not enabled the login_vt is always
- * identical to the session_vt. So in that case we never need to
- * do a VT switch. */
-#ifdef ENABLE_USER_DISPLAY_SERVER
- if (g_strcmp0 (worker->priv->display_seat_id, "seat0") == 0) {
- /* Switch to the login VT if we are not the login screen. */
- if (worker->priv->session_vt != GDM_INITIAL_VT) {
- jump_to_vt (worker, GDM_INITIAL_VT);
- }
- }
-#endif
-
worker->priv->session_vt = 0;
g_debug ("GdmSessionWorker: state NONE");
gdm_session_worker_set_state (worker, GDM_SESSION_WORKER_STATE_NONE);
}
static char *
_get_tty_for_pam (const char *x11_display_name,
const char *display_device)
{
#ifdef __sun
return g_strdup (display_device);
#else
return g_strdup (x11_display_name);
#endif
}
#ifdef PAM_XAUTHDATA
static struct pam_xauth_data *
_get_xauth_for_pam (const char *x11_authority_file)
{
FILE *fh;
Xauth *auth = NULL;
struct pam_xauth_data *retval = NULL;
gsize len = sizeof (*retval) + 1;
fh = fopen (x11_authority_file, "r");
if (fh) {
auth = XauReadAuth (fh);
fclose (fh);
@@ -1752,86 +1741,155 @@ gdm_session_worker_accredit_user (GdmSessionWorker *worker,
gdm_session_worker_set_state (worker, GDM_SESSION_WORKER_STATE_ACCREDITED);
} else {
gdm_session_worker_uninitialize_pam (worker, error_code);
}
return ret;
}
static const char * const *
gdm_session_worker_get_environment (GdmSessionWorker *worker)
{
return (const char * const *) pam_getenvlist (worker->priv->pam_handle);
}
static gboolean
run_script (GdmSessionWorker *worker,
const char *dir)
{
/* scripts are for non-program sessions only */
if (worker->priv->is_program_session) {
return TRUE;
}
return gdm_run_script (dir,
worker->priv->username,
worker->priv->x11_display_name,
worker->priv->display_is_local? NULL : worker->priv->hostname,
worker->priv->x11_authority_file);
}
+static void
+wait_until_dbus_signal_emission_to_manager_finishes (GdmSessionWorker *worker)
+{
+ g_autoptr (GdmDBusPeer) peer_proxy = NULL;
+ g_autoptr (GError) error = NULL;
+ gboolean pinged;
+
+ peer_proxy = gdm_dbus_peer_proxy_new_sync (worker->priv->connection,
+ G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES,
+ NULL,
+ "/org/freedesktop/DBus",
+ NULL,
+ &error);
+
+ if (peer_proxy == NULL) {
+ g_debug ("GdmSessionWorker: could not create peer proxy to daemon: %s",
+ error->message);
+ return;
+ }
+
+ pinged = gdm_dbus_peer_call_ping_sync (peer_proxy, NULL, &error);
+
+ if (!pinged) {
+ g_debug ("GdmSessionWorker: could not ping daemon: %s",
+ error->message);
+ return;
+ }
+}
+
+static void
+jump_back_to_initial_vt (GdmSessionWorker *worker)
+{
+ if (worker->priv->session_vt == 0)
+ return;
+
+ if (worker->priv->session_vt == GDM_INITIAL_VT)
+ return;
+
+ if (g_strcmp0 (worker->priv->display_seat_id, "seat0") != 0)
+ return;
+
+#ifdef ENABLE_USER_DISPLAY_SERVER
+ jump_to_vt (worker, GDM_INITIAL_VT);
+ worker->priv->session_vt = 0;
+#endif
+}
+
static void
session_worker_child_watch (GPid pid,
int status,
GdmSessionWorker *worker)
{
g_debug ("GdmSessionWorker: child (pid:%d) done (%s:%d)",
(int) pid,
WIFEXITED (status) ? "status"
: WIFSIGNALED (status) ? "signal"
: "unknown",
WIFEXITED (status) ? WEXITSTATUS (status)
: WIFSIGNALED (status) ? WTERMSIG (status)
: -1);
-
gdm_session_worker_uninitialize_pam (worker, PAM_SUCCESS);
+ worker->priv->child_pid = -1;
+ worker->priv->child_watch_id = 0;
+ run_script (worker, GDMCONFDIR "/PostSession");
+
gdm_dbus_worker_emit_session_exited (GDM_DBUS_WORKER (worker),
worker->priv->service,
status);
killpg (pid, SIGHUP);
- worker->priv->child_pid = -1;
- worker->priv->child_watch_id = 0;
- run_script (worker, GDMCONFDIR "/PostSession");
+ /* FIXME: It's important to give the manager an opportunity to process the
+ * session-exited emission above before switching VTs.
+ *
+ * This is because switching VTs makes the manager try to put a login screen
+ * up on VT 1, but it may actually want to try to auto login again in response
+ * to session-exited.
+ *
+ * This function just does a manager roundtrip over the bus to make sure the
+ * signal has been dispatched before jumping.
+ *
+ * Ultimately, we may want to improve the manager<->worker interface.
+ *
+ * See:
+ *
+ * https://gitlab.gnome.org/GNOME/gdm/-/merge_requests/123
+ *
+ * for some ideas and more discussion.
+ *
+ */
+ wait_until_dbus_signal_emission_to_manager_finishes (worker);
+
+ jump_back_to_initial_vt (worker);
}
static void
gdm_session_worker_watch_child (GdmSessionWorker *worker)
{
g_debug ("GdmSession worker: watching pid %d", worker->priv->child_pid);
worker->priv->child_watch_id = g_child_watch_add (worker->priv->child_pid,
(GChildWatchFunc)session_worker_child_watch,
worker);
}
static gboolean
_is_loggable_file (const char* filename)
{
struct stat file_info;
if (g_lstat (filename, &file_info) < 0) {
return FALSE;
}
return S_ISREG (file_info.st_mode) && g_access (filename, R_OK | W_OK) == 0;
}
static void
rotate_logs (const char *path,
guint n_copies)
{
int i;
@@ -2401,60 +2459,61 @@ gdm_session_worker_open_session (GdmSessionWorker *worker,
flags = 0;
if (worker->priv->is_program_session) {
flags |= PAM_SILENT;
}
error_code = pam_open_session (worker->priv->pam_handle, flags);
if (error_code != PAM_SUCCESS) {
g_set_error (error,
GDM_SESSION_WORKER_ERROR,
GDM_SESSION_WORKER_ERROR_OPENING_SESSION,
"%s", pam_strerror (worker->priv->pam_handle, error_code));
goto out;
}
g_debug ("GdmSessionWorker: state SESSION_OPENED");
gdm_session_worker_set_state (worker, GDM_SESSION_WORKER_STATE_SESSION_OPENED);
session_id = gdm_session_worker_get_environment_variable (worker, "XDG_SESSION_ID");
if (session_id != NULL) {
g_free (worker->priv->session_id);
worker->priv->session_id = session_id;
}
out:
if (error_code != PAM_SUCCESS) {
gdm_session_worker_uninitialize_pam (worker, error_code);
+ worker->priv->session_vt = 0;
return FALSE;
}
gdm_session_worker_get_username (worker, NULL);
gdm_session_auditor_report_login (worker->priv->auditor);
return TRUE;
}
static void
gdm_session_worker_set_server_address (GdmSessionWorker *worker,
const char *address)
{
g_free (worker->priv->server_address);
worker->priv->server_address = g_strdup (address);
}
static void
gdm_session_worker_set_is_reauth_session (GdmSessionWorker *worker,
gboolean is_reauth_session)
{
worker->priv->is_reauth_session = is_reauth_session;
}
static void
gdm_session_worker_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
@@ -3565,60 +3624,62 @@ gdm_session_worker_unwatch_child (GdmSessionWorker *worker)
return;
g_source_remove (worker->priv->child_watch_id);
worker->priv->child_watch_id = 0;
}
static void
gdm_session_worker_finalize (GObject *object)
{
GdmSessionWorker *worker;
g_return_if_fail (object != NULL);
g_return_if_fail (GDM_IS_SESSION_WORKER (object));
worker = GDM_SESSION_WORKER (object);
g_return_if_fail (worker->priv != NULL);
gdm_session_worker_unwatch_child (worker);
if (worker->priv->child_pid > 0) {
gdm_signal_pid (worker->priv->child_pid, SIGTERM);
gdm_wait_on_pid (worker->priv->child_pid);
}
if (worker->priv->pam_handle != NULL) {
gdm_session_worker_uninitialize_pam (worker, PAM_SUCCESS);
}
+ jump_back_to_initial_vt (worker);
+
g_clear_object (&worker->priv->user_settings);
g_free (worker->priv->service);
g_free (worker->priv->x11_display_name);
g_free (worker->priv->x11_authority_file);
g_free (worker->priv->display_device);
g_free (worker->priv->display_seat_id);
g_free (worker->priv->hostname);
g_free (worker->priv->username);
g_free (worker->priv->server_address);
g_strfreev (worker->priv->arguments);
g_strfreev (worker->priv->extensions);
g_hash_table_unref (worker->priv->reauthentication_requests);
G_OBJECT_CLASS (gdm_session_worker_parent_class)->finalize (object);
}
GdmSessionWorker *
gdm_session_worker_new (const char *address,
gboolean is_reauth_session)
{
GObject *object;
object = g_object_new (GDM_TYPE_SESSION_WORKER,
"server-address", address,
"is-reauth-session", is_reauth_session,
NULL);
return GDM_SESSION_WORKER (object);
}
diff --git a/daemon/org.freedesktop.DBus.xml b/daemon/org.freedesktop.DBus.xml
new file mode 100644
index 000000000..5e0814bde
--- /dev/null
+++ b/daemon/org.freedesktop.DBus.xml
@@ -0,0 +1,12 @@
+<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN"
+"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
+<node>
+ <interface name="org.freedesktop.DBus.Peer">
+ <method name="GetMachineId">
+ <arg direction="out" type="s"/>
+ </method>
+ <method name="Ping">
+ </method>
+ </interface>
+</node>
+
--
2.28.0

23
SOURCES/0049-GdmManager-GdmDisplay-Add-RegisterSession-method.patch
View File

@ -1,4 +1,4 @@
From ac45b0745db7a8e8cbdd3a2880c0e39f0f3681a3 Mon Sep 17 00:00:00 2001
From 2724b4fd6d4ac527acc481f056f535141b63fe24 Mon Sep 17 00:00:00 2001
From: Iain Lane <iainl@gnome.org>
Date: Tue, 7 May 2019 15:57:43 +0100
Subject: [PATCH 49/51] GdmManager, GdmDisplay: Add RegisterSession method
@ -6,13 +6,13 @@ Subject: [PATCH 49/51] GdmManager, GdmDisplay: Add RegisterSession method
Window managers can use this to register with GDM when they've finished
starting up and started displaying.
---
daemon/gdm-display.c | 27 +++++++++++++++++++++++++++
daemon/gdm-display.c | 24 ++++++++++++++++++++++++
daemon/gdm-manager.c | 30 ++++++++++++++++++++++++++++++
daemon/gdm-manager.xml | 3 +++
3 files changed, 60 insertions(+)
3 files changed, 57 insertions(+)
diff --git a/daemon/gdm-display.c b/daemon/gdm-display.c
index 1cef8c7c1..09cc2e116 100644
index 1cef8c7c1..56799741d 100644
--- a/daemon/gdm-display.c
+++ b/daemon/gdm-display.c
@@ -64,82 +64,84 @@ struct GdmDisplayPrivate
@ -100,7 +100,7 @@ index 1cef8c7c1..09cc2e116 100644
return self->priv->creation_time;
}
@@ -733,60 +735,71 @@ static void
@@ -733,60 +735,68 @@ static void
_gdm_display_set_x11_display_number (GdmDisplay *self,
int num)
{
@ -135,11 +135,8 @@ index 1cef8c7c1..09cc2e116 100644
+_gdm_display_set_session_registered (GdmDisplay *self,
+ gboolean registered)
+{
+ GdmDisplayPrivate *priv;
+
+ priv = gdm_display_get_instance_private (self);
+ g_debug ("GdmDisplay: session registered: %s", registered? "yes" : "no");
+ priv->session_registered = registered;
+ self->priv->session_registered = registered;
+}
+
static void
@ -172,7 +169,7 @@ index 1cef8c7c1..09cc2e116 100644
guint prop_id,
const GValue *value,
GParamSpec *pspec)
@@ -811,60 +824,63 @@ gdm_display_set_property (GObject *object,
@@ -811,60 +821,63 @@ gdm_display_set_property (GObject *object,
case PROP_SESSION_CLASS:
_gdm_display_set_session_class (self, g_value_get_string (value));
break;
@ -236,7 +233,7 @@ index 1cef8c7c1..09cc2e116 100644
g_value_set_string (value, self->priv->session_id);
break;
case PROP_SESSION_CLASS:
@@ -881,60 +897,63 @@ gdm_display_get_property (GObject *object,
@@ -881,60 +894,63 @@ gdm_display_get_property (GObject *object,
break;
case PROP_X11_DISPLAY_NAME:
g_value_set_string (value, self->priv->x11_display_name);
@ -300,7 +297,7 @@ index 1cef8c7c1..09cc2e116 100644
GdmDisplay *self)
{
char *hostname;
@@ -1197,60 +1216,68 @@ gdm_display_class_init (GdmDisplayClass *klass)
@@ -1197,60 +1213,68 @@ gdm_display_class_init (GdmDisplayClass *klass)
G_PARAM_READABLE));
g_object_class_install_property (object_class,
@ -550,5 +547,5 @@ index f11f3fb73..92ef1d02d 100644
</interface>
</node>
--
2.27.0
2.28.0

21
SPECS/gdm.spec
View File

@ -10,7 +10,7 @@
Name: gdm
Epoch: 1
Version: 3.28.3
Release: 34%{?dist}
Release: 39%{?dist}
Summary: The GNOME Display Manager
License: GPLv2+
@ -110,6 +110,12 @@ Patch200049: 0049-GdmManager-GdmDisplay-Add-RegisterSession-method.patch
Patch200050: 0050-Allow-sessions-to-register-with-GDM.patch
Patch200051: 0051-display-Handle-failure-before-display-registration.patch
# CVE-2020-16125
Patch210001: 0001-display-Exit-with-failure-if-loading-existing-users-.patch
# CVE-2020-27837
Patch220001: 0001-session-worker-Don-t-switch-back-VTs-until-session-i.patch
Patch300001: 0001-manager-Don-t-leak-session-objects.patch
Patch300002: 0002-session-Don-t-leak-remote-greeter-interface.patch
Patch300003: 0003-xdmcp-display-factory-Clear-launch-environment-when-.patch
@ -419,6 +425,19 @@ fi
%{_libdir}/pkgconfig/gdm-pam-extensions.pc
%changelog
* Wed Jan 27 2021 Ray Strode <rstrode@redhat.com> - 3.28.3-39
- Ensure login screen display server is is killed at log in
- Pull in fixes for two security issues
Resolves: #1918391
* Tue Nov 10 2020 Jonas Ådahl <jadahl@redhat.com> - 3.28.3-38
- Re-add disabling Wayland for server GPUs
Related: #1670273
* Tue Nov 10 2020 Jonas Ådahl <jadahl@redhat.com> - 3.28.3-35
- Stop disabling Wayland for server GPUs
Related: #1670273
* Tue Sep 15 2020 Ray Strode <rstrode@redhat.com> - 3.28.3-34
- Fix file descriptor leak
Resolves: #1877853