From: Eric Paris <eparis@redhat.com>
Date: Wed, 4 Apr 2012 17:47:11 +0000 (-0400)
Subject: SELinux: if sel_make_bools errors don't leave inconsistent state
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=154c50ca4eb9ae472f50b6a481213e21ead4457d;p=linux-beck.git

SELinux: if sel_make_bools errors don't leave inconsistent state

We reset the bool names and values array to NULL, but do not reset the
number of entries in these arrays to 0.  If we error out and then get back
into this function we will walk these NULL pointers based on the belief
that they are non-zero length.

Signed-off-by: Eric Paris <eparis@redhat.com>
cc: stable@kernel.org
---

diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index 640feaa06c08..4e93f9ef970b 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -1233,6 +1233,7 @@ static int sel_make_bools(void)
 		kfree(bool_pending_names[i]);
 	kfree(bool_pending_names);
 	kfree(bool_pending_values);
+	bool_num = 0;
 	bool_pending_names = NULL;
 	bool_pending_values = NULL;