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wifi: cfg80211: validate PMSR FTM preamble range

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PMSR FTM request parsing accepts preamble values outside the
enumerated nl80211 preamble range.

Reject out-of-range values before using them in the parser capability
bit test using the policy.

Fixes: 9bb7e0f24e ("cfg80211: add peer measurement with FTM initiator API")
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/20260612133703.93274-2-enderaoelyther@gmail.com
[drop unnecessary check]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Zhao Li 2026-06-12 21:37:04 +08:00 committed by Johannes Berg
parent 41aa973eb0
commit 3623093646
1 changed files with 3 additions and 1 deletions
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4
net/wireless/nl80211.c
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@ -461,7 +461,9 @@ nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
static const struct nla_policy
nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
[NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] =
NLA_POLICY_RANGE(NLA_U32, NL80211_PREAMBLE_LEGACY,
NL80211_PREAMBLE_HE),
[NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
NLA_POLICY_MAX(NLA_U8, 15),
[NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },