You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
72 lines
2.0 KiB
72 lines
2.0 KiB
3 years ago
|
diff --git a/src/polkit/polkitsystembusname.c b/src/polkit/polkitsystembusname.c
|
||
|
|
index 8ed1363..2fbf5f1 100644
|
||
|
|
--- a/src/polkit/polkitsystembusname.c
|
||
|
|
+++ b/src/polkit/polkitsystembusname.c
|
||
|
|
@@ -62,6 +62,10 @@ enum
|
||
|
|
PROP_NAME,
|
||
|
|
};
|
||
|
|
|
||
|
|
+
|
||
|
|
+guint8 dbus_call_respond_fails; // has to be global because of callback
|
||
|
|
+
|
||
|
|
+
|
||
|
|
static void subject_iface_init (PolkitSubjectIface *subject_iface);
|
||
|
|
|
||
|
|
G_DEFINE_TYPE_WITH_CODE (PolkitSystemBusName, polkit_system_bus_name, G_TYPE_OBJECT,
|
||
|
|
@@ -364,6 +368,7 @@ on_retrieved_unix_uid_pid (GObject *src,
|
||
|
|
if (!v)
|
||
|
|
{
|
||
|
|
data->caught_error = TRUE;
|
||
|
|
+ dbus_call_respond_fails += 1;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
@@ -405,6 +410,8 @@ polkit_system_bus_name_get_creds_sync (PolkitSystemBusName *system_bus
|
||
|
|
tmp_context = g_main_context_new ();
|
||
|
|
g_main_context_push_thread_default (tmp_context);
|
||
|
|
|
||
|
|
+ dbus_call_respond_fails = 0;
|
||
|
|
+
|
||
|
|
/* Do two async calls as it's basically as fast as one sync call.
|
||
|
|
*/
|
||
|
|
g_dbus_connection_call (connection,
|
||
|
|
@@ -432,11 +439,34 @@ polkit_system_bus_name_get_creds_sync (PolkitSystemBusName *system_bus
|
||
|
|
on_retrieved_unix_uid_pid,
|
||
|
|
&data);
|
||
|
|
|
||
|
|
- while (!((data.retrieved_uid && data.retrieved_pid) || data.caught_error))
|
||
|
|
- g_main_context_iteration (tmp_context, TRUE);
|
||
|
|
+ while (TRUE)
|
||
|
|
+ {
|
||
|
|
+ /* If one dbus call returns error, we must wait until the other call
|
||
|
|
+ * calls _call_finish(), otherwise fd leak is possible.
|
||
|
|
+ * Resolves: GHSL-2021-077
|
||
|
|
+ */
|
||
|
|
|
||
|
|
- if (data.caught_error)
|
||
|
|
- goto out;
|
||
|
|
+ if ( (dbus_call_respond_fails > 1) )
|
||
|
|
+ {
|
||
|
|
+ // we got two faults, we can leave
|
||
|
|
+ goto out;
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+ if ((data.caught_error && (data.retrieved_pid || data.retrieved_uid)))
|
||
|
|
+ {
|
||
|
|
+ // we got one fault and the other call finally finished, we can leave
|
||
|
|
+ goto out;
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+ if ( !(data.retrieved_uid && data.retrieved_pid) )
|
||
|
|
+ {
|
||
|
|
+ g_main_context_iteration (tmp_context, TRUE);
|
||
|
|
+ }
|
||
|
|
+ else
|
||
|
|
+ {
|
||
|
|
+ break;
|
||
|
|
+ }
|
||
|
|
+ }
|
||
|
|
|
||
|
|
if (out_uid)
|
||
|
|
*out_uid = data.uid;
|