From patchwork Sat Mar 15 12:29:26 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mikhail Lobanov X-Patchwork-Id: 874145 Received: from forward206b.mail.yandex.net (forward206b.mail.yandex.net [178.154.239.151]) (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 8FC6B15C140; Sat, 15 Mar 2025 12:36:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.154.239.151 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742042173; cv=none; b=OsYQ2e2Pyd0CRsgU/TScum+bi0uiWU4LHT6d+qay783oSLRqE9SzsBdC3YAYCapllUZd5DHJLGfFTmF66B4tppmnJ9j60BatZMeeWiRBIgQDIZjywoZJ1KxZtsJY8OAehA2HHOKH1G+x9ExVxRK3wvnILLRZSbKHTsExFokm05A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742042173; c=relaxed/simple; bh=oN9HWcuh4F8+f9HPJdYxr/wST9imw7WuzHDngWGt0N0=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=c2mTXWZ75/lpvIk2BbCN43mIVXZhvGLkyjuOWSDAr8kNaLVpqI4gWLfpS204O+7cBx+oXv8L1vX72zEupsL1YmRWXuX1x8IBPybvAPCETZnrT2tnfMSJa2i2AYaT3eGp8RDlzcM6kGAujiju4ElrX6ADlJzLIil3rLO1CqhxnLw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=rosa.ru; spf=pass smtp.mailfrom=rosa.ru; dkim=pass (1024-bit key) header.d=rosa.ru header.i=@rosa.ru header.b=FcQHHpN6; arc=none smtp.client-ip=178.154.239.151 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=rosa.ru Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rosa.ru Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=rosa.ru header.i=@rosa.ru header.b="FcQHHpN6" Received: from forward100b.mail.yandex.net (forward100b.mail.yandex.net [IPv6:2a02:6b8:c02:900:1:45:d181:d100]) by forward206b.mail.yandex.net (Yandex) with ESMTPS id BA76763143; Sat, 15 Mar 2025 15:30:49 +0300 (MSK) Received: from mail-nwsmtp-smtp-production-main-60.sas.yp-c.yandex.net (mail-nwsmtp-smtp-production-main-60.sas.yp-c.yandex.net [IPv6:2a02:6b8:c27:153f:0:640:5e4f:0]) by forward100b.mail.yandex.net (Yandex) with ESMTPS id 291F960B61; Sat, 15 Mar 2025 15:30:42 +0300 (MSK) Received: by mail-nwsmtp-smtp-production-main-60.sas.yp-c.yandex.net (smtp/Yandex) with ESMTPSA id YUEkhaMLnKo0-HtcZrsFh; Sat, 15 Mar 2025 15:30:41 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rosa.ru; s=mail; t=1742041841; bh=9J6oKvW6KDTaSvr9oja02aRy6UsaDX0Qo0S3KNyGeBw=; h=Message-ID:Date:Cc:Subject:To:From; b=FcQHHpN6PFybtcR7mMztZxxU36eVyMuMPHUCAy8XSzByrXQHo/aQ4xkjpNklc4rSo tEB01dqzOJOwDTHhr8aN5HqWO51GZil3jkkRloIaV2TmGQaRq31ONMiIJ4ULydHpPM KUnFrGWdATYuXrqgu7kIXnxLyoyUM+m7l3z7/I1k= Authentication-Results: mail-nwsmtp-smtp-production-main-60.sas.yp-c.yandex.net; dkim=pass header.i=@rosa.ru From: Mikhail Lobanov To: Johannes Berg Cc: Mikhail Lobanov , Shaul Triebitz , linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] wifi: mac80211: check basic rates validity in Date: Sat, 15 Mar 2025 15:29:26 +0300 Message-ID: <20250315123001.58020-1-m.lobanov@rosa.ru> X-Mailer: git-send-email 2.47.2 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 When userspace sets supported rates for a new station via NL80211_CMD_NEW_STATION, it might send a list that's empty or contains only invalid values. Currently, we process these values in sta_link_apply_parameters() without checking the result of ieee80211_parse_bitrates(), which can lead to an empty rates bitmap. A similar issue was addressed for NL80211_CMD_SET_BSS in commit ce04abc3fcc6 ("wifi: mac80211: check basic rates validity"). This patch applies the same approach in sta_link_apply_parameters() for NL80211_CMD_NEW_STATION, ensuring there is at least one valid rate by inspecting the result of ieee80211_parse_bitrates(). Found by Linux Verification Center (linuxtesting.org) with Syzkaller. Fixes: b95eb7f0eee4 ("wifi: cfg80211/mac80211: separate link params from station params") Signed-off-by: Mikhail Lobanov --- net/mac80211/cfg.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 9351c64608a9..e7c429aef980 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1909,10 +1909,11 @@ static int sta_link_apply_parameters(struct ieee80211_local *local, if (params->supported_rates && params->supported_rates_len) { - ieee80211_parse_bitrates(link->conf->chanreq.oper.width, + (!ieee80211_parse_bitrates(link->conf->chanreq.oper.width, sband, params->supported_rates, params->supported_rates_len, - &link_sta->pub->supp_rates[sband->band]); + &link_sta->pub->supp_rates[sband->band])) + return -EINVAL; } if (params->ht_capa)