Commit 9dde1309 authored by Alexander Aring's avatar Alexander Aring Committed by Stefan Schmidt
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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: default avatar <syzbot+fbf4fc11a819824e027b@syzkaller.appspotmail.com>
Signed-off-by: default avatarAlexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20210405003054.256017-15-aahringo@redhat.com


Signed-off-by: default avatarStefan Schmidt <stefan@datenfreihafen.org>
parent 9ec87e32

net/ieee802154/nl802154.c

+3 −0
Original line number Diff line number Diff line
@@ -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)