6.15-stable review patch. If anyone has any objections, please let me know.
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From: Moon Hee Lee moonhee.lee.ca@gmail.com
[ Upstream commit 16ecdab5446f15a61ec88eb0d23d25d009821db0 ]
syzbot triggered a WARN in ieee80211_tdls_oper() by sending NL80211_TDLS_ENABLE_LINK immediately after NL80211_CMD_CONNECT, before association completed and without prior TDLS setup.
This left internal state like sdata->u.mgd.tdls_peer uninitialized, leading to a WARN_ON() in code paths that assumed it was valid.
Reject the operation early if not in station mode or not associated.
Reported-by: syzbot+f73f203f8c9b19037380@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=f73f203f8c9b19037380 Fixes: 81dd2b882241 ("mac80211: move TDLS data to mgd private part") Tested-by: syzbot+f73f203f8c9b19037380@syzkaller.appspotmail.com Signed-off-by: Moon Hee Lee moonhee.lee.ca@gmail.com Link: https://patch.msgid.link/20250715230904.661092-2-moonhee.lee.ca@gmail.com Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/mac80211/tdls.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/mac80211/tdls.c b/net/mac80211/tdls.c index 2f92e7c7f203..49c92c5d3909 100644 --- a/net/mac80211/tdls.c +++ b/net/mac80211/tdls.c @@ -1422,7 +1422,7 @@ int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) return -EOPNOTSUPP;
- if (sdata->vif.type != NL80211_IFTYPE_STATION) + if (sdata->vif.type != NL80211_IFTYPE_STATION || !sdata->vif.cfg.assoc) return -EINVAL;
switch (oper) {