diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2025-07-18 20:23:06 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-20 18:30:29 +0200 |
| commit | 8ab6e67ae52462f9594d7b74cd9678f14bb031b1 (patch) | |
| tree | 17863de6c175932f23895a4013cf294ffbb2a617 | |
| parent | 1d325fed242d44c322d41d23396ee3148894c4d2 (diff) | |
wifi: cfg80211: reject HTC bit for management frames
[ Upstream commit be06a8c7313943109fa870715356503c4c709cbc ]
Management frames sent by userspace should never have the
order/HTC bit set, reject that. It could also cause some
confusion with the length of the buffer and the header so
the validation might end up wrong.
Link: https://patch.msgid.link/20250718202307.97a0455f0f35.I1805355c7e331352df16611839bc8198c855a33f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | net/wireless/mlme.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c index a5eb92d93074..d1a66410b9c5 100644 --- a/net/wireless/mlme.c +++ b/net/wireless/mlme.c @@ -843,7 +843,8 @@ int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev, mgmt = (const struct ieee80211_mgmt *)params->buf; - if (!ieee80211_is_mgmt(mgmt->frame_control)) + if (!ieee80211_is_mgmt(mgmt->frame_control) || + ieee80211_has_order(mgmt->frame_control)) return -EINVAL; stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE; |