Commit 9dde1309 authored by Alexander Aring's avatar Alexander Aring Committed by Stefan Schmidt

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