From: Zhao Li <enderaoelyther@gmail.com>
To: Johannes Berg <johannes@sipsolutions.net>,
John Crispin <john@phrozen.org>,
Aloka Dixit <quic_alokad@quicinc.com>,
Aloka Dixit <aloka.dixit@oss.qualcomm.com>,
Muna Sinada <muna.sinada@oss.qualcomm.com>,
Rameshkumar Sundaram <rameshkumar.sundaram@oss.qualcomm.com>
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 [thread overview]
Message-ID: <20260612131854.43575-4-enderaoelyther@gmail.com> (raw)
In-Reply-To: <20260612131854.43575-3-enderaoelyther@gmail.com>
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 <enderaoelyther@gmail.com>
---
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)
prev parent reply other threads:[~2026-06-12 13:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-12 13:18 [PATCH 1/2] wifi: nl80211: validate nested MBSSID IE blobs Zhao Li
2026-06-12 13:18 ` Zhao Li [this message]
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