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 DCAB043E08C; Thu, 30 Jul 2026 14:22:00 +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=1785421322; cv=none; b=jvSBb3cQVjprvsMvWRq1ucrhmIVjjeC0Xbk+yZIwBG/Dlb0Dh++bsiQutKGZ3PR51lgN8FuuiH+cQq1DvjnWrsoWFTaML5QF8apaFSAc2xq09zE+13GlKwDZUTuNbcqWTLi+Ayi7p98i0dg7SA9JFowDrrz+Xy5E2NwxIBYX0Dk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785421322; c=relaxed/simple; bh=nSky7C/iQbPmStt0zFZjs3z8fDIUwtWiJLBTYNMbqxY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=RnbJF/gNlCNJeQoAVmhlyXNT73bibVTjNcyRp15P505oLgsdud7kBoPDN128Ghm2ubF3Q855haCBMS3cctf/eWriRR8odmxKOLTwFjRJZ1KtrLHGs/Y0HOHNE/cNj901uQgzfBM0W+B0qT5Idsm2PG+pM6/OV7fZ8FL8bPV/CP8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=T0PvXJKM; 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="T0PvXJKM" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 35F521F000E9; Thu, 30 Jul 2026 14:22:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1785421320; bh=JwiofZ3JOjY35ApKihY6sJAZFdpsOOtRgZb1eoh6eTo=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=T0PvXJKMhSMsxxrypZT0LRhi/yEtW/+5TKE46fBT8Q7rrkIDpvB3ZcntE4Rb6OZau NItzN+BxkkdNJGX/O5qoRfcl2r6ecwDYqHVAHZiTgkN6nxizHpwd6/C3la+HDRV84m p4LeBaBZYSlK4HdBT+1RtAyWqFGiVPXlFV+ABnbA= 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 7.1 063/744] wifi: nl80211: constrain MBSSID TX link ID range Date: Thu, 30 Jul 2026 16:05:36 +0200 Message-ID: <20260730141445.617524341@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260730141444.267951807@linuxfoundation.org> References: <20260730141444.267951807@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 7.1-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 264ae4e742a1c4..3024fa8dd78021 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -616,7 +616,7 @@ 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