Patch "wifi: cfg80211: reject bad AP MLD address" has been added to the 6.1-stable tree

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

    wifi: cfg80211: reject bad AP MLD address

to the 6.1-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:
     wifi-cfg80211-reject-bad-ap-mld-address.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit d3b451cbd18809fecb1138a9e2beb744495a9684
Author: Johannes Berg <johannes.berg@xxxxxxxxx>
Date:   Sun Jun 4 12:11:18 2023 +0300

    wifi: cfg80211: reject bad AP MLD address
    
    [ Upstream commit 727073ca5e55ab6a07df316250be8a12606e8677 ]
    
    When trying to authenticate, if the AP MLD address isn't
    a valid address, mac80211 can throw a warning. Avoid that
    by rejecting such addresses.
    
    Fixes: d648c23024bd ("wifi: nl80211: support MLO in auth/assoc")
    Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
    Signed-off-by: Gregory Greenman <gregory.greenman@xxxxxxxxx>
    Link: https://lore.kernel.org/r/20230604120651.89188912bd1d.I8dbc6c8ee0cb766138803eec59508ef4ce477709@changeid
    Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 7320d676ce3a5..087c0c442e231 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -10542,6 +10542,8 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
 		if (!info->attrs[NL80211_ATTR_MLD_ADDR])
 			return -EINVAL;
 		req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
+		if (!is_valid_ether_addr(req.ap_mld_addr))
+			return -EINVAL;
 	}
 
 	req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,



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