linux-kernel - [PATCH 4.9 39/47] net: ieee802154: forbid monitor for set llsec params

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Message-Id: <20210415144414.706659260@linuxfoundation.org>
Date:   Thu, 15 Apr 2021 16:47:31 +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,
        syzbot+8b6719da8a04beeafcc3@...kaller.appspotmail.com,
        Alexander Aring <aahringo@...hat.com>,
        Stefan Schmidt <stefan@...enfreihafen.org>
Subject: [PATCH 4.9 39/47] net: ieee802154: forbid monitor for set llsec params

From: Alexander Aring <aahringo@...hat.com>

commit 88c17855ac4291fb462e13a86b7516773b6c932e upstream.

This patch forbids to set llsec params for monitor interfaces which we
don't support yet.

Reported-by: syzbot+8b6719da8a04beeafcc3@...kaller.appspotmail.com
Signed-off-by: Alexander Aring <aahringo@...hat.com>
Link: https://lore.kernel.org/r/20210405003054.256017-3-aahringo@redhat.com
Signed-off-by: Stefan Schmidt <stefan@...enfreihafen.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/ieee802154/nl802154.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -1417,6 +1417,9 @@ static int nl802154_set_llsec_params(str
 	u32 changed = 0;
 	int ret;
 
+	if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
+		return -EOPNOTSUPP;
+
 	if (info->attrs[NL802154_ATTR_SEC_ENABLED]) {
 		u8 enabled;