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secret-file-backend: Fix use-after-free in flatpak

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The on_portal_retrieve_secret() can connect a GCancellable, but it
doesn't disconnect from it (only when the cancellable is cancelled),
which means when the cancellable is cancelled later, when the GTask
is gone, the callback is called with already freed data.
This commit is contained in:
Milan Crha 2020-03-19 09:24:52 +01:00
parent eb4f967e9f
commit 523fe32b65
1 changed files with 6 additions and 0 deletions
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6
libsecret/secret-file-backend.c
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@ -231,6 +231,11 @@ on_portal_response (GDBusConnection *connection,
InitClosure *init = g_task_get_task_data (task);
guint32 response;
if (init->cancellable_signal_id) {
g_cancellable_disconnect (g_task_get_cancellable (task), init->cancellable_signal_id);
init->cancellable_signal_id = 0;
}
g_dbus_connection_signal_unsubscribe (connection,
init->portal_signal_id);
@ -303,6 +308,7 @@ on_portal_cancel (GCancellable *cancellable,
task);
g_cancellable_disconnect (cancellable, init->cancellable_signal_id);
init->cancellable_signal_id = 0;
}
static void