From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:36368 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751455AbeBWSc4 (ORCPT ); Fri, 23 Feb 2018 13:32:56 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, syzbot , Paul Moore , Stephen Smalley , James Morris Subject: [PATCH 4.4 011/193] selinux: skip bounded transition processing if the policy isnt loaded Date: Fri, 23 Feb 2018 19:24:04 +0100 Message-Id: <20180223170327.926341341@linuxfoundation.org> In-Reply-To: <20180223170325.997716448@linuxfoundation.org> References: <20180223170325.997716448@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Paul Moore commit 4b14752ec4e0d87126e636384cf37c8dd9df157c upstream. We can't do anything reasonable in security_bounded_transition() if we don't have a policy loaded, and in fact we could run into problems with some of the code inside expecting a policy. Fix these problems like we do many others in security/selinux/ss/services.c by checking to see if the policy is loaded (ss_initialized) and returning quickly if it isn't. Reported-by: syzbot Signed-off-by: Paul Moore Acked-by: Stephen Smalley Reviewed-by: James Morris Signed-off-by: Greg Kroah-Hartman --- security/selinux/ss/services.c | 3 +++ 1 file changed, 3 insertions(+) --- a/security/selinux/ss/services.c +++ b/security/selinux/ss/services.c @@ -860,6 +860,9 @@ int security_bounded_transition(u32 old_ int index; int rc; + if (!ss_initialized) + return 0; + read_lock(&policy_rwlock); rc = -EINVAL;