[PATCH] scsi: be2iscsi: Reset the address passed in beiscsi_iface_create_default

From: Aditya Pakki <pakki001@umn.edu>
To: pakki001@umn.edu
Cc: Subbu Seetharaman <subbu.seetharaman@broadcom.com>,
	Ketan Mukadam <ketan.mukadam@broadcom.com>,
	Jitendra Bhivare <jitendra.bhivare@broadcom.com>,
	"James E.J. Bottomley" <jejb@linux.ibm.com>,
	"Martin K. Petersen" <martin.petersen@oracle.com>,
	linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] scsi: be2iscsi: Reset the address passed in beiscsi_iface_create_default
Date: Tue,  6 Apr 2021 19:24:45 -0500	[thread overview]
Message-ID: <20210407002445.2209330-1-pakki001@umn.edu> (raw)

if_info is a local variable that is passed to beiscsi_if_get_info. In
case of failure, the variable is free'd but not reset to NULL. The patch
avoids security issue by passing NULL to if_info.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
---
 drivers/scsi/be2iscsi/be_iscsi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/scsi/be2iscsi/be_iscsi.c b/drivers/scsi/be2iscsi/be_iscsi.c
index a13c203ef7a9..1ff9d2a2a876 100644
--- a/drivers/scsi/be2iscsi/be_iscsi.c
+++ b/drivers/scsi/be2iscsi/be_iscsi.c
@@ -274,11 +274,13 @@ void beiscsi_iface_create_default(struct beiscsi_hba *phba)
 	if (!beiscsi_if_get_info(phba, BEISCSI_IP_TYPE_V4, &if_info)) {
 		beiscsi_iface_create_ipv4(phba);
 		kfree(if_info);
+		if_info = NULL;
 	}
 
 	if (!beiscsi_if_get_info(phba, BEISCSI_IP_TYPE_V6, &if_info)) {
 		beiscsi_iface_create_ipv6(phba);
 		kfree(if_info);
+		if_info = NULL;
 	}
 }
 
-- 
2.25.1

