From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8CDF5C7EE2A for ; Mon, 22 May 2023 19:14:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233793AbjEVTOd (ORCPT ); Mon, 22 May 2023 15:14:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37502 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231241AbjEVTOb (ORCPT ); Mon, 22 May 2023 15:14:31 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AD7D5132 for ; Mon, 22 May 2023 12:14:25 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E88FC61E03 for ; Mon, 22 May 2023 19:14:24 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0C1DFC433EF; Mon, 22 May 2023 19:14:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1684782864; bh=8ZNai726AUuvlBFgVah4ZMjI08GB475HySzYeOqUfVs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=D8ThcFvuL6Owo+/4xH5IpH0qKe3jtT5dOgdo+TMZnNOYk0Jgyea6QZHAniMKb8EtK yH7BvufaWV9I6R5jcQ7S5Q7oifS4ttF8+ZTxtRAEWUjBZSjKCCUrTMogyfLfEgO4bD n6F8EMfqbrdxMH4E3PmDogVlA1RYfc/opqylEyFY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Linus Walleij , Arend van Spriel , Hector Martin , Kalle Valo , Sasha Levin Subject: [PATCH 5.15 051/203] wifi: brcmfmac: cfg80211: Pass the PMK in binary instead of hex Date: Mon, 22 May 2023 20:07:55 +0100 Message-Id: <20230522190356.411970129@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230522190354.935300867@linuxfoundation.org> References: <20230522190354.935300867@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Hector Martin [ Upstream commit 89b89e52153fda2733562776c7c9d9d3ebf8dd6d ] Apparently the hex passphrase mechanism does not work on newer chips/firmware (e.g. BCM4387). It seems there was a simple way of passing it in binary all along, so use that and avoid the hexification. OpenBSD has been doing it like this from the beginning, so this should work on all chips. Also clear the structure before setting the PMK. This was leaking uninitialized stack contents to the device. Reviewed-by: Linus Walleij Reviewed-by: Arend van Spriel Signed-off-by: Hector Martin Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20230214092423.15175-6-marcan@marcan.st Signed-off-by: Sasha Levin --- .../wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c index 5a1b01db02e6e..b14c54da56ed9 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c @@ -1350,13 +1350,14 @@ static int brcmf_set_pmk(struct brcmf_if *ifp, const u8 *pmk_data, u16 pmk_len) { struct brcmf_pub *drvr = ifp->drvr; struct brcmf_wsec_pmk_le pmk; - int i, err; + int err; + + memset(&pmk, 0, sizeof(pmk)); - /* convert to firmware key format */ - pmk.key_len = cpu_to_le16(pmk_len << 1); - pmk.flags = cpu_to_le16(BRCMF_WSEC_PASSPHRASE); - for (i = 0; i < pmk_len; i++) - snprintf(&pmk.key[2 * i], 3, "%02x", pmk_data[i]); + /* pass pmk directly */ + pmk.key_len = cpu_to_le16(pmk_len); + pmk.flags = cpu_to_le16(0); + memcpy(pmk.key, pmk_data, pmk_len); /* store psk in firmware */ err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SET_WSEC_PMK, -- 2.39.2