From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 371AB34252D; Sat, 12 Sep 2026 09:45:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789206360; cv=none; b=V7LdVP3N2Lc1wPnS0+TTyydYtHzpnQB2m5+YUj8y0G+5+qYRnivCQsP/xSQtUTQv+wJVcMB4qlCVxQVQN7dSfzDNgmalvhV30e3KxLRAU/ePW0ppaC9JTczwwaRTUBYna8FPsBP+g38p0ZpyruUzBkJW+WReZ3+x8gvVE790KTk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789206360; c=relaxed/simple; bh=UhRYiBTRM0+SYRrfsZzB1VjGvrKFMARU8ILR190XaZY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=OW3SdGmlHsKppdfoJ194ONosvEW7MYhgJQW0hbNh9Lp+/yZZioqzh48uzYUZZOvG4waj1gLhlX6KpTxZbirB1i9qG5rI3xb0/xNBhcFDawAjGMp5xyUDFKej1jX7kMcmg2tDLmsiAavxXWqXKejvZtd3JKWJuFVxFWJx9pv230w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=x9WaC+2i; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="x9WaC+2i" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0920D1F000FF; Sat, 12 Sep 2026 09:45:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789206359; bh=d19xBI4FndS7v3yZh+3PUB0fD9lBgcKfE9osLKOUFzA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=x9WaC+2iydtpkgCx+iOwulZcsY9j1BxILf+mhxm2WOOxk74x46C4X3j4DbSvkg/eN Hwso1THMzI/cIZ+eSJ1zVzib4nQvZWsy7ejCE/cvDiVL20dQHWTbvMwLosZzc7pmhp gurNOXdJAdHZPKGAwRFbe0pDdKD8fs8ICH5tu2nc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Pengpeng Hou , Ping-Ke Shih , Sasha Levin Subject: [PATCH 6.18 0192/1518] wifi: rtw89: fix HE extended capability length check Date: Sat, 12 Sep 2026 08:39:21 +0200 Message-ID: <20260912065627.834492135@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065623.398859879@linuxfoundation.org> References: <20260912065623.398859879@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Pengpeng Hou [ Upstream commit 2aba608a86e9b099c9af2ea70b620552dee2b628 ] rtw89_mac_check_he_obss_narrow_bw_ru_iter() reads extended capability byte 10, but rejects only datalen values below 10. Byte 10 requires at least 11 bytes. Require datalen >= 11 before reading data[10]. Fixes: 8d540f9d2916 ("wifi: rtw89: disable 26-tone RU HE TB PPDU transmissions") Signed-off-by: Pengpeng Hou Acked-by: Ping-Ke Shih Signed-off-by: Ping-Ke Shih Link: https://patch.msgid.link/2026063009025530.2-ccfa108-0024-wifi-rtw89-fix-HE-extended--pengpeng@iscas.ac.cn Signed-off-by: Sasha Levin --- drivers/net/wireless/realtek/rtw89/mac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/realtek/rtw89/mac.c b/drivers/net/wireless/realtek/rtw89/mac.c index 8194ae570ee94..f0773f7c3749a 100644 --- a/drivers/net/wireless/realtek/rtw89/mac.c +++ b/drivers/net/wireless/realtek/rtw89/mac.c @@ -4885,7 +4885,7 @@ static void rtw89_mac_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy, elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, ies->data, ies->len); - if (!elem || elem->datalen < 10 || + if (!elem || elem->datalen < 11 || !(elem->data[10] & WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) *tolerated = false; rcu_read_unlock(); -- 2.53.0