This is a note to let you know that I've just added the patch titled net: ieee802154: forbid monitor for add llsec seclevel to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: net-ieee802154-forbid-monitor-for-add-llsec-seclevel.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit da1a833fd87c4d3badc800717146b2c4d4ae72fc Author: Alexander Aring <aahringo@xxxxxxxxxx> Date: Sun Apr 4 20:30:52 2021 -0400 net: ieee802154: forbid monitor for add llsec seclevel [ Upstream commit 9ec87e322428d4734ac647d1a8e507434086993d ] 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 <aahringo@xxxxxxxxxx> Link: https://lore.kernel.org/r/20210405003054.256017-14-aahringo@xxxxxxxxxx Signed-off-by: Stefan Schmidt <stefan@xxxxxxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c index f07a3027d66c..b2ff2f7329c3 100644 --- a/net/ieee802154/nl802154.c +++ b/net/ieee802154/nl802154.c @@ -2103,6 +2103,9 @@ 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;