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wifi: cfg80211: reject HTC bit for management frames

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[ Upstream commit be06a8c731 ]

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>
This commit is contained in:
Johannes Berg 2025-07-18 20:23:06 +02:00 committed by Greg Kroah-Hartman
parent 5d9f912543
commit d486ff6734
1 changed files with 2 additions and 1 deletions
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3
net/wireless/mlme.c
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@ -700,7 +700,8 @@ 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;