From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jiri Benc Subject: Re: [net] vxlan: fix use-after-free on deletion Date: Thu, 1 Jun 2017 10:53:08 +0200 Message-ID: <20170601105308.0be70eb4@griffin> References: <1496306615-770-1-git-send-email-markb@mellanox.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: , To: Mark Bloch Return-path: Received: from mx1.redhat.com ([209.132.183.28]:38284 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751083AbdFAIxM (ORCPT ); Thu, 1 Jun 2017 04:53:12 -0400 In-Reply-To: <1496306615-770-1-git-send-email-markb@mellanox.com> Sender: netdev-owner@vger.kernel.org List-ID: On Thu, 1 Jun 2017 11:43:35 +0300, Mark Bloch wrote: > Adding a vxlan interface to a socket isn't symmetrical, while adding > is done in vxlan_open() the deletion is done in vxlan_dellink(). > This can cause a use-after-free error when we close the vxlan > interface before deleting it. > > We add vxlan_vs_del_dev() to match vxlan_vs_add_dev() and call > it from vxlan_stop() to match the call from vxlan_open(). > > Signed-off-by: Mark Bloch Acked-by: Jiri Benc