From: Christophe Ricard <christophe.ricard@gmail.com>
Date: Sun, 10 Aug 2014 22:04:56 +0000 (+0200)
Subject: NFC: st21nfca: Add condition to make sure atr_req->length is valid.
X-Git-Tag: fixes-against-v3.18-rc2~144^2~39^2~72^2~20
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=56f1ffcccd784672654918f9214979b4918c2544;p=pandora-kernel.git

NFC: st21nfca: Add condition to make sure atr_req->length is valid.

gb_len in st21nfca_tm_send_atr_res can be negative. Not checking for
that could lead to a potential kernel oops.
We now make sure that atr_req->length > sizeof(struct st21nfca_atr_req)
to avoid such situation.

Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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