From: Alexander Aring <aahringo@redhat.com>
Date: Mon, 5 Apr 2021 00:30:41 +0000 (-0400)
Subject: net: ieee802154: forbid monitor for set llsec params
X-Git-Tag: v4.4.267~7
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f4ec1cdddb615ac63935b13fe635f99d823d98ea;p=thirdparty%2Fkernel%2Fstable.git

net: ieee802154: forbid monitor for set llsec params

commit 88c17855ac4291fb462e13a86b7516773b6c932e upstream.

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

Reported-by: syzbot+8b6719da8a04beeafcc3@syzkaller.appspotmail.com
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20210405003054.256017-3-aahringo@redhat.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index b8c0c64e935cc..447acb40400f2 100644
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -1367,6 +1367,9 @@ static int nl802154_set_llsec_params(struct sk_buff *skb,
 	u32 changed = 0;
 	int ret;
 
+	if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
+		return -EOPNOTSUPP;
+
 	if (info->attrs[NL802154_ATTR_SEC_ENABLED]) {
 		u8 enabled;