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Message-Id: <20180528100055.087697854@linuxfoundation.org>
Date: Mon, 28 May 2018 12:01:30 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
Johannes Thumshirn <jthumshirn@...e.de>,
"Martin K. Petersen" <martin.petersen@...cle.com>,
Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 3.18 049/185] scsi: mptfusion: Add bounds check in mptctl_hp_targetinfo()
3.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dan Carpenter <dan.carpenter@...cle.com>
[ Upstream commit a7043e9529f3c367cc4d82997e00be034cbe57ca ]
My static checker complains about an out of bounds read:
drivers/message/fusion/mptctl.c:2786 mptctl_hp_targetinfo()
error: buffer overflow 'hd->sel_timeout' 255 <= u32max.
It's true that we probably should have a bounds check here.
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@...e.de>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/message/fusion/mptctl.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/message/fusion/mptctl.c
+++ b/drivers/message/fusion/mptctl.c
@@ -2694,6 +2694,8 @@ mptctl_hp_targetinfo(unsigned long arg)
__FILE__, __LINE__, iocnum);
return -ENODEV;
}
+ if (karg.hdr.id >= MPT_MAX_FC_DEVICES)
+ return -EINVAL;
dctlprintk(ioc, printk(MYIOC_s_DEBUG_FMT "mptctl_hp_targetinfo called.\n",
ioc->name));
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