From: Mike Gorse <mgorse@suse.com>
Date: Thu, 31 Mar 2016 17:18:25 +0000 (-0500)
Subject: emit_event: fix out-of-bounds memory access if class is NULL
X-Git-Tag: AT_SPI2_ATK_2_20_1~3
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c2eb33645466164b0d74372283eac7603e71122e;p=platform%2Fupstream%2Fat-spi2-atk.git

emit_event: fix out-of-bounds memory access if class is NULL

https://bugzilla.gnome.org/show_bug.cgi?id=758935
---

diff --git a/atk-adaptor/event.c b/atk-adaptor/event.c
index 6e8c07a..517d653 100644
--- a/atk-adaptor/event.c
+++ b/atk-adaptor/event.c
@@ -388,7 +388,7 @@ signal_is_needed (AtkObject *obj, const gchar *klass, const gchar *major,
   if (!spi_global_app_data->events_initialized)
     return TRUE;
 
-  data [0] = ensure_proper_format (klass + 21);
+  data [0] = ensure_proper_format (klass[0] ? klass + 21 : klass);
   data [1] = ensure_proper_format (major);
   data [2] = ensure_proper_format (minor);
   data [3] = NULL;