From: Johan Hovold <johan@kernel.org>
Date: Mon, 6 Mar 2017 16:36:37 +0000 (+0100)
Subject: USB: serial: io_ti: fix NULL-deref in interrupt callback
X-Git-Tag: v3.2.91~89
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=23b94d65c57ab09748e02935a20a6cdef34bb6be;p=pandora-kernel.git

USB: serial: io_ti: fix NULL-deref in interrupt callback

commit 0b1d250afb8eb9d65afb568bac9b9f9253a82b49 upstream.

Fix a NULL-pointer dereference in the interrupt callback should a
malicious device send data containing a bad port number by adding the
missing sanity check.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Johan Hovold <johan@kernel.org>
[bwh: Backported to 3.2:
 - Use &urb->dev->dev instead of local dev variable
 - Adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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