From cda2b84a69905aafe2f8c6bd3f1c9eefe92b6bbb Mon Sep 17 00:00:00 2001 From: Michal Schmidt Date: Wed, 25 May 2011 16:17:17 +0200 Subject: [PATCH] dbus-common: fix segfault when a DBus message has no interface dbus_message_get_interface() may return NULL. https://bugzilla.redhat.com/show_bug.cgi?id=707483 --- src/dbus-common.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/src/dbus-common.c b/src/dbus-common.c index 9bf0dabe..5db077b7 100644 --- a/src/dbus-common.c +++ b/src/dbus-common.c @@ -418,9 +418,13 @@ DBusHandlerResult bus_default_message_handler( return bus_send_error_reply(c, message, &error, -EINVAL); } - } else if (!nulstr_contains(interfaces, dbus_message_get_interface(message))) { - dbus_set_error_const(&error, DBUS_ERROR_UNKNOWN_INTERFACE, "Unknown interface"); - return bus_send_error_reply(c, message, &error, -EINVAL); + } else { + const char *interface = dbus_message_get_interface(message); + + if (!interface || !nulstr_contains(interfaces, interface)) { + dbus_set_error_const(&error, DBUS_ERROR_UNKNOWN_INTERFACE, "Unknown interface"); + return bus_send_error_reply(c, message, &error, -EINVAL); + } } if (reply) { -- 2.39.5