[Lucid][CVE-2013-6383] aacraid: missing capable() check in compat ioctl

[Luis Henriques]

From: Dan Carpenter <dan.carpenter at oracle.com>

CVE-2013-6383

BugLink: http://bugs.launchpad.net/bugs/1256094

In commit d496f94d22d1 ('[SCSI] aacraid: fix security weakness') we
added a check on CAP_SYS_RAWIO to the ioctl.  The compat ioctls need the
check as well.

Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>
Cc: stable at kernel.org
Signed-off-by: Linus Torvalds <torvalds at linux-foundation.org>
(cherry picked from commit f856567b930dfcdbc3323261bf77240ccdde01f5)
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 drivers/scsi/aacraid/linit.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 9b97c3e..387872c 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -754,6 +754,8 @@ static long aac_compat_do_ioctl(struct aac_dev *dev, unsigned cmd, unsigned long
 static int aac_compat_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
 {
 	struct aac_dev *dev = (struct aac_dev *)sdev->host->hostdata;
+	if (!capable(CAP_SYS_RAWIO))
+		return -EPERM;
 	return aac_compat_do_ioctl(dev, cmd, (unsigned long)arg);
 }
 
-- 
1.8.3.2