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Commit 39193498 authored by Johannes Berg's avatar Johannes Berg Committed by John W. Linville
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cfg80211: validate IBSS BSSID 



The IBSS BSSID is never validated, so an
invalid one might end up being used. Fix
this by rejecting invalid configuration.

Reported-by: default avatarMarek Lindner <lindner_marek@yahoo.de>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent bbb55742

net/wireless/nl80211.c

+5 −1
Original line number Diff line number Diff line
@@ -4527,8 +4527,12 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 


	wiphy = &rdev->wiphy;



	if (info->attrs[NL80211_ATTR_MAC])

	if (info->attrs[NL80211_ATTR_MAC]) {

		ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);



		if (!is_valid_ether_addr(ibss.bssid))

			return -EINVAL;

	}

	ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);

	ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);