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wifi: cfg80211: ignore invalid TBTT info field types
The TBTT information field type must be zero. This is only changed in the 802.11be draft specification where the value 1 is used to indicate that only the MLD parameters are included. Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Signed-off-by: Gregory Greenman <gregory.greenman@intel.com> Link: https://lore.kernel.org/r/20230616094949.7865606ffe94.I7ff28afb875d1b4c39acd497df8490a7d3628e3f@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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@ -4481,6 +4481,8 @@ static inline bool for_each_element_completed(const struct element *element,
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#define IEEE80211_AP_INFO_TBTT_HDR_FILTERED 0x04
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#define IEEE80211_AP_INFO_TBTT_HDR_COLOC 0x08
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#define IEEE80211_AP_INFO_TBTT_HDR_COUNT 0xF0
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#define IEEE80211_TBTT_INFO_TYPE_TBTT 0
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#define IEEE80211_TBTT_INFO_TYPE_MLD 1
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#define IEEE80211_TBTT_INFO_OFFSET_BSSID_BSS_PARAM 9
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#define IEEE80211_TBTT_INFO_OFFSET_BSSID_SSSID_BSS_PARAM 13
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@ -629,6 +629,13 @@ static int cfg80211_parse_colocated_ap(const struct cfg80211_bss_ies *ies,
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if (end - pos < count * length)
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break;
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if (u8_get_bits(ap_info->tbtt_info_hdr,
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IEEE80211_AP_INFO_TBTT_HDR_TYPE) !=
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IEEE80211_TBTT_INFO_TYPE_TBTT) {
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pos += count * length;
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continue;
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}
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/*
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* TBTT info must include bss param + BSSID +
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* (short SSID or same_ssid bit to be set).
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