From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:50160 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753070AbcJEITO (ORCPT ); Wed, 5 Oct 2016 04:19:14 -0400 Subject: Patch "i40iw: Avoid writing to freed memory" has been added to the 4.7-stable tree To: mustafa.ismail@intel.com, dledford@redhat.com, gregkh@linuxfoundation.org, sassmann@redhat.com, shiraz.saleem@intel.com Cc: , From: Date: Wed, 05 Oct 2016 10:18:15 +0200 Message-ID: <14756554951531@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled i40iw: Avoid writing to freed memory to the 4.7-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: i40iw-avoid-writing-to-freed-memory.patch and it can be found in the queue-4.7 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 433c58139f6a7d59824aadd23d6c9cac1d4e6100 Mon Sep 17 00:00:00 2001 From: Mustafa Ismail Date: Tue, 23 Aug 2016 17:24:56 -0500 Subject: i40iw: Avoid writing to freed memory From: Mustafa Ismail commit 433c58139f6a7d59824aadd23d6c9cac1d4e6100 upstream. iwpbl->iwmr points to the structure that contains iwpbl, which is iwmr. Setting this to NULL would result in writing to freed memory. So just free iwmr, and return. Fixes: d37498417947 ("i40iw: add files for iwarp interface") Reported-by: Stefan Assmann Signed-off-by: Mustafa Ismail Signed-off-by: Shiraz Saleem Signed-off-by: Doug Ledford Signed-off-by: Greg Kroah-Hartman --- drivers/infiniband/hw/i40iw/i40iw_verbs.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/drivers/infiniband/hw/i40iw/i40iw_verbs.c +++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.c @@ -1924,8 +1924,7 @@ static int i40iw_dereg_mr(struct ib_mr * } if (iwpbl->pbl_allocated) i40iw_free_pble(iwdev->pble_rsrc, palloc); - kfree(iwpbl->iwmr); - iwpbl->iwmr = NULL; + kfree(iwmr); return 0; } Patches currently in stable-queue which might be from mustafa.ismail@intel.com are queue-4.7/i40iw-update-hw_iwarp_state.patch queue-4.7/i40iw-add-missing-check-for-interface-already-open.patch queue-4.7/i40iw-fix-double-free-of-allocated_buffer.patch queue-4.7/i40iw-receive-notification-events-correctly.patch queue-4.7/i40iw-change-mem_resources-pointer-to-a-u8.patch queue-4.7/i40iw-protect-req_resource_num-update.patch queue-4.7/i40iw-add-missing-null-check-for-mpa-private-data.patch queue-4.7/i40iw-avoid-writing-to-freed-memory.patch queue-4.7/i40iw-do-not-set-self-referencing-pointer-to-null-after-kfree.patch