linux-kernel - [PATCH v1] scsi: iscsi: use kfree_sensitive() in iscsi_session

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Date:   Mon, 17 Jul 2023 17:26:57 +0800
From:   Minjie Du <duminjie@...o.com>
To:     Lee Duncan <lduncan@...e.com>, Chris Leech <cleech@...hat.com>,
        Mike Christie <michael.christie@...cle.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        open-iscsi@...glegroups.com (open list:ISCSI),
        linux-scsi@...r.kernel.org (open list:ISCSI),
        linux-kernel@...r.kernel.org (open list)
Cc:     opensource.kernel@...o.com, Minjie Du <duminjie@...o.com>
Subject: [PATCH v1] scsi: iscsi: use kfree_sensitive() in iscsi_session_free()

session might contain private part of the password, so better use
kfree_sensitive() to free it.
In iscsi_session_free() use kfree_sensitive() to free session->password.

Signed-off-by: Minjie Du <duminjie@...o.com>
---
 drivers/scsi/libiscsi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index 0fda8905e..2f273229c 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -3132,7 +3132,7 @@ void iscsi_session_free(struct iscsi_cls_session *cls_session)
 	struct module *owner = cls_session->transport->owner;
 
 	iscsi_pool_free(&session->cmdpool);
-	kfree(session->password);
+	kfree_sensitive(session->password);
 	kfree(session->password_in);
 	kfree(session->username);
 	kfree(session->username_in);
-- 
2.39.0