From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:48158 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751639AbdBLWP1 (ORCPT ); Sun, 12 Feb 2017 17:15:27 -0500 Subject: Patch "IB/rxe: Fix mem_check_range integer overflow" has been added to the 4.9-stable tree To: eyal.itkin@gmail.com, dan.carpenter@oracle.com, dledford@redhat.com, gregkh@linuxfoundation.org, leonro@mellanox.com Cc: , From: Date: Sun, 12 Feb 2017 14:15:24 -0800 Message-ID: <1486937724124148@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 IB/rxe: Fix mem_check_range integer overflow to the 4.9-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: ib-rxe-fix-mem_check_range-integer-overflow.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 647bf3d8a8e5777319da92af672289b2a6c4dc66 Mon Sep 17 00:00:00 2001 From: Eyal Itkin Date: Tue, 7 Feb 2017 16:45:19 +0300 Subject: IB/rxe: Fix mem_check_range integer overflow From: Eyal Itkin commit 647bf3d8a8e5777319da92af672289b2a6c4dc66 upstream. Update the range check to avoid integer-overflow in edge case. Resolves CVE 2016-8636. Signed-off-by: Eyal Itkin Signed-off-by: Dan Carpenter Reviewed-by: Leon Romanovsky Signed-off-by: Doug Ledford Signed-off-by: Greg Kroah-Hartman --- drivers/infiniband/sw/rxe/rxe_mr.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) --- a/drivers/infiniband/sw/rxe/rxe_mr.c +++ b/drivers/infiniband/sw/rxe/rxe_mr.c @@ -59,9 +59,11 @@ int mem_check_range(struct rxe_mem *mem, case RXE_MEM_TYPE_MR: case RXE_MEM_TYPE_FMR: - return ((iova < mem->iova) || - ((iova + length) > (mem->iova + mem->length))) ? - -EFAULT : 0; + if (iova < mem->iova || + length > mem->length || + iova > mem->iova + mem->length - length) + return -EFAULT; + return 0; default: return -EFAULT; Patches currently in stable-queue which might be from eyal.itkin@gmail.com are queue-4.9/ib-rxe-fix-resid-update.patch queue-4.9/ib-rxe-fix-mem_check_range-integer-overflow.patch