Re: [PATCH] drivers/net/hamradio: Integer overflow inhdlcdrv_ioctl()

From: David Miller
Date: Thu Dec 19 2013 - 15:03:09 EST


From: Wenliang Fan <fanwlexca@xxxxxxxxx>
Date: Tue, 17 Dec 2013 11:25:28 +0800

> 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@xxxxxxxxx>

Applied and queued up for -stable, thanks.
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