From: Qixue Xiao <s2exqx@gmail.com>
Date: Fri, 20 Dec 2013 09:51:12 +0000 (+0800)
Subject: tty: an overflow of multiplication in drivers/tty/cyclades.c
X-Git-Tag: v3.14-rc1~149^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=351d6204bfc814a1aee300296d2f54460ffff172;p=pandora-kernel.git

tty: an overflow of multiplication in drivers/tty/cyclades.c

there is an overflow in the code :
cyz_polling_cycle = (arg * HZ) / 1000,
the multiplicator arg comes from user, so it may be an overflow if
arg is a big number. And the value of cyc_polling_cycle will be
wrong when it is used next time.

Reported-by: Qixue Xiao <xiaoqixue_1@163.com>
Suggested-by: Yongjian Xu <xuyongjiande@gmail.com>
Suggested-by: Yu Chen <chyyuu@gmail.com>
Signed-off-by: Qixue Xiao <xiaoqixue_1@163.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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