linux-kernel - [patch -resend] cpqarray: info leak in ida_locked

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Message-ID: <20130911073800.GA25349@mwanda>
Date:	Wed, 11 Sep 2013 10:38:00 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Chirag Kantharia <chirag.kantharia@...com>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	iss_storagedev@...com, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org,
	Moritz Muehlenhoff <jmm@...ian.org>
Subject: [patch -resend] cpqarray: info leak in ida_locked_ioctl()

The pciinfo struct has a two byte hole after ->dev_fn so stack
information could be leaked to the user.

This was assigned CVE-2013-2147.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c
index 639d26b..2b94403 100644
--- a/drivers/block/cpqarray.c
+++ b/drivers/block/cpqarray.c
@@ -1193,6 +1193,7 @@ out_passthru:
 		ida_pci_info_struct pciinfo;
 
 		if (!arg) return -EINVAL;
+		memset(&pciinfo, 0, sizeof(pciinfo));
 		pciinfo.bus = host->pci_dev->bus->number;
 		pciinfo.dev_fn = host->pci_dev->devfn;
 		pciinfo.board_id = host->board_id;
--
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