Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 90eab526 authored by Alexander Aring's avatar Alexander Aring Committed by Greg Kroah-Hartman
Browse files

net: ieee802154: forbid monitor for del llsec seclevel 



commit 9dde130937e95b72adfae64ab21d6e7e707e2dac upstream.

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>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 12f120ce

net/ieee802154/nl802154.c

+3 −0
Original line number Diff line number Diff line
@@ -2122,6 +2122,9 @@ 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)