net: ieee802154: forbid monitor for add llsec seclevel

[ Upstream commit 9ec87e3 ] 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 <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Stefan Schmidt <[email protected]> Signed-off-by: Sasha Levin <[email protected]>
mrchapp · Apr 26, 2021 · 792533a · 792533a
1 parent 450fb9e
commit 792533a
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
@@ -2138,6 +2138,9 @@ 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;