[CRIU] [PATCH 1/3] cg: Fix use-after-free in put_ctls

[Cyrill Gorcunov]

From: Cyrill Gorcunov <gorcunov at virtuozzo.com>

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 at 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 24a9154981db..4522ce67e25a 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
-- 
2.5.5