From: Chen Gang <gang.chen@asianux.com>
Date: Fri, 19 Jul 2013 01:01:36 +0000 (+0800)
Subject: cifs: extend the buffer length enought for sprintf() using
X-Git-Tag: v3.2.51~70
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1cd4b1b1558ca2227047c17dc6f61d07f8406e2f;p=pandora-kernel.git

cifs: extend the buffer length enought for sprintf() using

commit 057d6332b24a4497c55a761c83c823eed9e3f23b upstream.

For cifs_set_cifscreds() in "fs/cifs/connect.c", 'desc' buffer length
is 'CIFSCREDS_DESC_SIZE' (56 is less than 256), and 'ses->domainName'
length may be "255 + '\0'".

The related sprintf() may cause memory overflow, so need extend related
buffer enough to hold all things.

It is also necessary to be sure of 'ses->domainName' must be less than
256, and define the related macro instead of hard code number '256'.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Reviewed-by: Scott Lovenberg <scott.lovenberg@gmail.com>
Signed-off-by: Steve French <smfrench@gmail.com>
[bwh: Backported to 3.2:
 - Adjust context in sess.c
 - Drop inapplicable changes to connect.c]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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