From 5de410dfb4d9019e2efb366b0577041bc6c1f5ea Mon Sep 17 00:00:00 2001 From: Ilan Peer Date: Sun, 7 Sep 2025 11:51:17 +0300 Subject: [PATCH] wifi: mac80211: Fix HE capabilities element check [ Upstream commit ea928544f3215fdeac24d66bef85e10bb638b8c1 ] The element data length check did not account for the extra octet used for the extension ID. Fix it. Signed-off-by: Ilan Peer Signed-off-by: Miri Korenblit Link: https://patch.msgid.link/20250907115109.8da0012e2286.I8c0c69a0011f7153c13b365b14dfef48cfe7c3e3@changeid Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- net/mac80211/mlme.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index fd2bc70afa0cd..0cba454d6e685 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -5148,7 +5148,7 @@ static u8 ieee80211_max_rx_chains(struct ieee80211_link_data *link, he_cap_elem = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, ies->data, ies->len); - if (!he_cap_elem || he_cap_elem->datalen < sizeof(*he_cap)) + if (!he_cap_elem || he_cap_elem->datalen < sizeof(*he_cap) + 1) return chains; /* skip one byte ext_tag_id */ -- 2.47.3