From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Mon, 19 Mar 2018 11:07:45 +0000 (+0300)
Subject: staging: ncpfs: memory corruption in ncp_read_kernel()
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=38643d20b4d4ac378046e51b15556f0f7dc489ea;p=pandora-kernel.git

staging: ncpfs: memory corruption in ncp_read_kernel()

commit 4c41aa24baa4ed338241d05494f2c595c885af8f upstream.

If the server is malicious then *bytes_read could be larger than the
size of the "target" buffer.  It would lead to memory corruption when we
do the memcpy().

Reported-by: Dr Silvio Cesare of InfoSect <Silvio Cesare <silvio.cesare@gmail.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[carnil: backport to 4.9: Files renamed from drivers/staging/ncpfs/ncplib_kernel.c
 to fs/ncpfs/ncplib_kernel.c]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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