Patch "nl80211: Check for the required netlink attribute presence" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

nl80211: Check for the required netlink attribute presence

to the 4.9-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:
nl80211-check-for-the-required-netlink-attribute-presence.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Hao Chen <[email protected]>
Date: Wed, 3 Jan 2018 11:00:31 +0800
Subject: nl80211: Check for the required netlink attribute presence

From: Hao Chen <[email protected]>

[ Upstream commit 3ea15452ee85754f70f3b9fa1f23165ef2e77ba7 ]

nl80211_nan_add_func() does not check if the required attribute NL80211_NAN_FUNC_FOLLOW_UP_DEST is present when processing NL80211_CMD_ADD_NAN_FUNCTION request. This request can be issued by users with CAP_NET_ADMIN privilege and may result in NULL dereference and a system crash. Add a check for the required attribute presence.

---
 net/wireless/nl80211.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

@@ -10777,7 +10777,8 @@ static int nl80211_nan_add_func(struct s
 		break;
 	case NL80211_NAN_FUNC_FOLLOW_UP:
 		if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
-		    !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]) {
+		    !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
+		    !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
 			err = -EINVAL;
 			goto out;
 		}

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/nl80211-check-for-the-required-netlink-attribute-presence.patch