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 C276029DB6C; Thu, 30 Jul 2026 15:00:40 +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=1785423641; cv=none; b=FL72WxGRgmfSilzDKKZscwsoIzC0S3Em9eKic2mBwYDXbpSOEXs2lu6KaaE4L1svvVc5DCit3K+wTA0mgAcWOPGqsrjfonqmXEXbGZ7r+K+WLJNCJoKVZrGuelJGGqV4UV3AEcHrLEvYfieqBr56xc6vXpxnHj3K6tD+Wq6kTPY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785423641; c=relaxed/simple; bh=ASMy+lJn0zJ7PNNr5iPBOLrRg/SK43RD1M7y0jOjvMo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rbI5MVGaU1Jy1BCEkyu5n5u2QKhzHYEAScYTrEVNGlWh/h0uWgVB9OZDe8KGcZGgNcSvHeFEmh4lyZSWNrHdCqlg0JYTSLs5feTNExvKwAQRWn8N4TRuc7k3RsgzuCvdNncJ6ZWAn/07OK+d1zNTDCQ2AlQUonwpgvaNn4fGvCs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=byWCCYGD; 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="byWCCYGD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 28D5B1F00A3A; Thu, 30 Jul 2026 15:00:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1785423640; bh=eNyMu5Ca//YU54AzRtEiN99Ip6cSRIS+HB5fWqKt9Nk=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=byWCCYGDuCdlrjxopNYljdRMTmny6Lk6zLX7YOG3Fnj9dCok1oCiIyXSDG80QzGB2 lYq/crB6UlCWQSbjIDrJwd9wfK17oImFQXkaS3FcGhVyPWYnFMEQn5DlGwQzqwRyvU 0lXcK/05qi7cLOXdrbJWfDkB5qx0sk2L6l2oHJGg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Zhao Li , Johannes Berg , Sasha Levin Subject: [PATCH 6.18 078/675] wifi: nl80211: constrain MBSSID TX link ID range Date: Thu, 30 Jul 2026 16:06:48 +0200 Message-ID: <20260730141446.787876910@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260730141445.110192266@linuxfoundation.org> References: <20260730141445.110192266@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: Zhao Li [ Upstream commit 172f06023669f0a96d32511669ff45c600731380 ] MBSSID transmitted-profile link IDs are valid only in the range 0..IEEE80211_MLD_MAX_NUM_LINKS - 1. Constrain the nl80211 policy to reject out-of-range values during attribute validation. Fixes: 37523c3c47b3 ("wifi: nl80211: add link id of transmitted profile for MLO MBSSID") Assisted-by: Codex:gpt-5.5 Assisted-by: Claude:claude-opus-4.8 Signed-off-by: Zhao Li Link: https://patch.msgid.link/20260612131854.43575-4-enderaoelyther@gmail.com Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- net/wireless/nl80211.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 5583edf4852775..237e5d7eeb47c3 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -501,7 +501,7 @@ nl80211_mbssid_config_policy[NL80211_MBSSID_CONFIG_ATTR_MAX + 1] = { [NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX] = { .type = NLA_U32 }, [NL80211_MBSSID_CONFIG_ATTR_EMA] = { .type = NLA_FLAG }, [NL80211_MBSSID_CONFIG_ATTR_TX_LINK_ID] = - NLA_POLICY_MAX(NLA_U8, IEEE80211_MLD_MAX_NUM_LINKS), + NLA_POLICY_RANGE(NLA_U8, 0, IEEE80211_MLD_MAX_NUM_LINKS - 1), }; static const struct nla_policy -- 2.53.0