From: Philipp Reisner <philipp.reisner@linbit.com>
Date: Fri, 6 Apr 2012 10:08:51 +0000 (+0200)
Subject: drbd: Ensure that data_size is not 0 before using data_size-1 as index
X-Git-Tag: v3.8-rc1~78^2~18^2~86
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e4bad1bcacd82b3d7727e30db26be3580bdc722a;p=pandora-kernel.git

drbd: Ensure that data_size is not 0 before using data_size-1 as index

This could be exploited by a peer which runs modified code.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
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