This is a note to let you know that I've just added the patch titled
wifi: mac80211: fix use-after-free
to the 6.0-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-mac80211-fix-use-after-free.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 8ea3b436eb75972d44ba5126a3a3833048119a94
Author: Johannes Berg <johannes.berg@xxxxxxxxx>
Date: Wed Aug 17 10:44:05 2022 +0200
wifi: mac80211: fix use-after-free
[ Upstream commit 40fb87129049ec5876dabf4a4d4aed6642b31f1a ]
We've already freed the assoc_data at this point, so need
to use another copy of the AP (MLD) address instead.
Fixes: 81151ce462e5 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index fc764984d687..1e9cb4be6ed3 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -5122,7 +5122,7 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
resp.req_ies = ifmgd->assoc_req_ies;
resp.req_ies_len = ifmgd->assoc_req_ies_len;
if (sdata->vif.valid_links)
- resp.ap_mld_addr = assoc_data->ap_addr;
+ resp.ap_mld_addr = sdata->vif.cfg.ap_addr;
cfg80211_rx_assoc_resp(sdata->dev, &resp);
notify_driver:
drv_mgd_complete_tx(sdata->local, sdata, &info);
