http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0028

--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1202,7 +1202,9 @@ static struct task_struct *copy_process(
 	p->parent_exec_id = p->self_exec_id;
 
 	/* ok, now we should be set up.. */
-	p->exit_signal = (clone_flags & CLONE_THREAD) ? -1 : (clone_flags & CSIGNAL);
+	p->exit_signal = (clone_flags & CLONE_THREAD) ? -1 :
+			 (clone_flags & CLONE_PARENT) ? current->group_leader->exit_signal :
+			 (clone_flags & CSIGNAL);
 	p->pdeath_signal = 0;
 	p->exit_state = 0;
 
