From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:53606 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751368AbdIDKxa (ORCPT ); Mon, 4 Sep 2017 06:53:30 -0400 Subject: Patch "CIFS: Fix maximum SMB2 header size" has been added to the 4.4-stable tree To: pshilov@microsoft.com, gregkh@linuxfoundation.org, smfrench@gmail.com, sprabhu@redhat.com Cc: , From: Date: Mon, 04 Sep 2017 12:53:29 +0200 Message-ID: <1504522409181188@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 CIFS: Fix maximum SMB2 header size to the 4.4-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: cifs-fix-maximum-smb2-header-size.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 9e37b1784f2be9397a903307574ee565bbadfd75 Mon Sep 17 00:00:00 2001 From: Pavel Shilovsky Date: Thu, 24 Aug 2017 15:16:40 -0700 Subject: CIFS: Fix maximum SMB2 header size From: Pavel Shilovsky commit 9e37b1784f2be9397a903307574ee565bbadfd75 upstream. Currently the maximum size of SMB2/3 header is set incorrectly which leads to hanging of directory listing operations on encrypted SMB3 connections. Fix this by setting the maximum size to 170 bytes that is calculated as RFC1002 length field size (4) + transform header size (52) + SMB2 header size (64) + create response size (56). Signed-off-by: Pavel Shilovsky Signed-off-by: Steve French Acked-by: Sachin Prabhu Signed-off-by: Greg Kroah-Hartman --- fs/cifs/smb2pdu.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/fs/cifs/smb2pdu.h +++ b/fs/cifs/smb2pdu.h @@ -82,8 +82,8 @@ #define NUMBER_OF_SMB2_COMMANDS 0x0013 -/* BB FIXME - analyze following length BB */ -#define MAX_SMB2_HDR_SIZE 0x78 /* 4 len + 64 hdr + (2*24 wct) + 2 bct + 2 pad */ +/* 4 len + 52 transform hdr + 64 hdr + 56 create rsp */ +#define MAX_SMB2_HDR_SIZE 0x00b0 #define SMB2_PROTO_NUMBER cpu_to_le32(0x424d53fe) Patches currently in stable-queue which might be from pshilov@microsoft.com are queue-4.4/cifs-fix-maximum-smb2-header-size.patch queue-4.4/cifs-remove-endian-related-sparse-warning.patch