From 94bfda900ee43adbd67a8bca5fd838e4aca5ff99 Mon Sep 17 00:00:00 2001
From: Cyrill Gorcunov <gorcunov@virtuozzo.com>
Date: Thu, 31 Mar 2016 17:39:43 +0300
Subject: [PATCH] cg: Fix use-after-free in put_ctls

Since we're freeing list entries don't forget to
initialize list then, otherwise it gets out with
free entries and may hit use-after-free bug.

Signed-off-by: Cyrill Gorcunov <gorcunov@virtuozzo.com>
Acked-by: Tycho Andersen <tycho.andersen@canonical.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
---
 criu/proc_parse.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/criu/proc_parse.c b/criu/proc_parse.c
index 24a915498..4522ce67e 100644
--- a/criu/proc_parse.c
+++ b/criu/proc_parse.c
@@ -2302,6 +2302,7 @@ void put_ctls(struct list_head *l)
 		xfree(c->path);
 		xfree(c);
 	}
+	INIT_LIST_HEAD(l);
 }
 
 /* Parse and create all the real controllers. This does not include things with