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wifi: nl80211: constrain MBSSID TX link ID range

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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: 37523c3c47 ("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>
Link: https://patch.msgid.link/20260612131854.43575-4-enderaoelyther@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Zhao Li
2026-06-12 21:18:56 +08:00
committed by Johannes Berg
parent 7f4b018123
commit 172f060236
1 changed files with 1 additions and 1 deletions
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2
net/wireless/nl80211.c
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@@ -630,7 +630,7 @@ 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