From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Mon, 17 Feb 2014 19:57:31 +0000 (+0300)
Subject: staging/bcm: integer underflow leads to Oom
X-Git-Tag: v3.15-rc1~139^2~1004
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ee2104ea865f8a12eebb382aa502f248e14a5a2d;p=pandora-kernel.git

staging/bcm: integer underflow leads to Oom

We do:

        if (NOB > DEFAULT_BUFF_SIZE)
                BuffSize = DEFAULT_BUFF_SIZE;
        else
                BuffSize = NOB;

Since NOB can be negative it results in a larger than intended BuffSize
and makes kzalloc() fail.

The code is still a bit crap because it lets the users read as much as
they want from nvram, but I don't know what a sensible upper limit
should be.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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