From: Wenliang Fan <fanwlexca@gmail.com>
Date: Tue, 17 Dec 2013 03:25:28 +0000 (+0800)
Subject: drivers/net/hamradio: Integer overflow in hdlcdrv_ioctl()
X-Git-Tag: v3.2.55~72
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6ea9c09b5c3b6248ae4fed3240e6aefbefa2169b;p=pandora-kernel.git

drivers/net/hamradio: Integer overflow in hdlcdrv_ioctl()

[ Upstream commit e9db5c21d3646a6454fcd04938dd215ac3ab620a ]

The local variable 'bi' comes from userspace. If userspace passed a
large number to 'bi.data.calibrate', there would be an integer overflow
in the following line:
	s->hdlctx.calibrate = bi.data.calibrate * s->par.bitrate / 16;

Signed-off-by: Wenliang Fan <fanwlexca@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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