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wifi: mac80211: add HE 6 GHz capability in the scan elems len

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The HE 6 GHz Band Capability element is in the probe request for
every band if 6 GHz is supported, so add the size to scan_ies_len.

Otherwise, building probe request elements can fail, triggering the
WARN_ON in __ieee80211_start_scan().

Assisted-by: LLM
Fixes: 2ad2274c58 ("mac80211: Add HE 6GHz capabilities element to probe request")
Reported-by: syzbot+f961b9f94edbc266f1f8@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=f961b9f94edbc266f1f8
Link: https://patch.msgid.link/20260908122838.201719-19-johannes@sipsolutions.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2026-09-08 14:28:18 +02:00
parent 0b1de9feeb
commit cd54bf333f
1 changed files with 4 additions and 0 deletions
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4
net/mac80211/main.c
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@ -1453,6 +1453,10 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
sizeof(struct ieee80211_he_mcs_nss_supp) +
IEEE80211_HE_PPE_THRES_MAX_LEN;
if (local->hw.wiphy->bands[NL80211_BAND_6GHZ])
local->scan_ies_len +=
3 + sizeof(struct ieee80211_he_6ghz_capa);
if (supp_eht)
local->scan_ies_len +=
3 + sizeof(struct ieee80211_eht_cap_elem) +