net: ieee802154: forbid monitor for del llsec seclevel

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: [email protected] Signed-off-by: Alexander Aring <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Stefan Schmidt <[email protected]>
chewitt · Apr 6, 2021 · 9dde130 · 9dde130
1 parent 9ec87e3
commit 9dde130
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
@@ -2133,6 +2133,9 @@ 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)