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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Alexander Aring <aahringo@redhat.com>,
	syzbot+fbf4fc11a819824e027b@syzkaller.appspotmail.com,
	Stefan Schmidt <stefan@datenfreihafen.org>,
	Sasha Levin <sashal@kernel.org>,
	linux-wpan@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 4.9 17/23] net: ieee802154: forbid monitor for del llsec seclevel
Date: Mon, 12 Apr 2021 12:26:58 -0400
Message-ID: <20210412162704.315783-17-sashal@kernel.org> (raw)
In-Reply-To: <20210412162704.315783-1-sashal@kernel.org>

From: Alexander Aring <aahringo@redhat.com>

[ Upstream commit 9dde130937e95b72adfae64ab21d6e7e707e2dac ]

This patch forbids to del llsec seclevel for monitor interfaces which we
don't support yet. Otherwise we will access llsec mib which isn't
initialized for monitors.

Reported-by: syzbot+fbf4fc11a819824e027b@syzkaller.appspotmail.com
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20210405003054.256017-15-aahringo@redhat.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/ieee802154/nl802154.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index c51467693c6d..2fad9f40acac 100644
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -2162,6 +2162,9 @@ static int nl802154_del_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 (!info->attrs[NL802154_ATTR_SEC_LEVEL] ||
 	    llsec_parse_seclevel(info->attrs[NL802154_ATTR_SEC_LEVEL],
 				 &sl) < 0)
-- 
2.30.2


  parent reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-12 16:26 [PATCH AUTOSEL 4.9 01/23] net: ieee802154: nl-mac: fix check on panid Sasha Levin
2021-04-12 16:26 ` [PATCH AUTOSEL 4.9 06/23] drivers: net: fix memory leak in atusb_probe Sasha Levin
2021-04-12 16:26 ` [PATCH AUTOSEL 4.9 09/23] net: ieee802154: forbid monitor for set llsec params Sasha Levin
2021-04-12 16:26 ` [PATCH AUTOSEL 4.9 10/23] net: ieee802154: stop dump llsec keys for monitors Sasha Levin
2021-04-12 16:26 ` [PATCH AUTOSEL 4.9 11/23] net: ieee802154: stop dump llsec devs " Sasha Levin
2021-04-12 16:26 ` [PATCH AUTOSEL 4.9 12/23] net: ieee802154: forbid monitor for add llsec dev Sasha Levin
2021-04-12 16:26 ` [PATCH AUTOSEL 4.9 13/23] net: ieee802154: stop dump llsec devkeys for monitors Sasha Levin
2021-04-12 16:26 ` [PATCH AUTOSEL 4.9 14/23] net: ieee802154: forbid monitor for add llsec devkey Sasha Levin
2021-04-12 16:26 ` [PATCH AUTOSEL 4.9 15/23] net: ieee802154: stop dump llsec seclevels for monitors Sasha Levin
2021-04-12 16:26 ` [PATCH AUTOSEL 4.9 16/23] net: ieee802154: forbid monitor for add llsec seclevel Sasha Levin
2021-04-12 16:26 ` Sasha Levin [this message]
2021-04-12 16:26 ` [PATCH AUTOSEL 4.9 18/23] net: ieee802154: stop dump llsec params for monitors Sasha Levin
2021-04-12 16:27 ` [PATCH AUTOSEL 4.9 19/23] net: mac802154: Fix general protection fault Sasha Levin

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