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Fri, 12 Jun 2026 06:19:06 -0700 (PDT) From: Zhao Li To: Johannes Berg , John Crispin , Aloka Dixit , Aloka Dixit , Muna Sinada , Rameshkumar Sundaram Cc: linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] wifi: nl80211: constrain MBSSID TX link ID range Date: Fri, 12 Jun 2026 21:18:56 +0800 Message-ID: <20260612131854.43575-4-enderaoelyther@gmail.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260612131854.43575-3-enderaoelyther@gmail.com> References: <20260612131854.43575-3-enderaoelyther@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 --- 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 2baf1bef0bbd2..9344247386656 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 -- 2.50.1 (Apple Git-155)