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Message-Id: <20210426072817.772696219@linuxfoundation.org>
Date: Mon, 26 Apr 2021 09:29:16 +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, Alexander Aring <aahringo@...hat.com>,
Stefan Schmidt <stefan@...enfreihafen.org>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.9 15/37] net: ieee802154: forbid monitor for add llsec seclevel
From: Alexander Aring <aahringo@...hat.com>
[ Upstream commit 9ec87e322428d4734ac647d1a8e507434086993d ]
This patch forbids to add llsec seclevel for monitor interfaces which we
don't support yet. Otherwise we will access llsec mib which isn't
initialized for monitors.
Signed-off-by: Alexander Aring <aahringo@...hat.com>
Link: https://lore.kernel.org/r/20210405003054.256017-14-aahringo@redhat.com
Signed-off-by: Stefan Schmidt <stefan@...enfreihafen.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
net/ieee802154/nl802154.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index 0e6d9bf92be3..cfc01314958f 100644
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -2153,6 +2153,9 @@ static int nl802154_add_llsec_seclevel(struct sk_buff *skb,
struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
struct ieee802154_llsec_seclevel sl;
+ if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
+ return -EOPNOTSUPP;
+
if (llsec_parse_seclevel(info->attrs[NL802154_ATTR_SEC_LEVEL],
&sl) < 0)
return -EINVAL;
--
2.30.2
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