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cfg80211: validate IBSS BSSID

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

Reported-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2011-09-16 13:45:25 +02:00 committed by John W. Linville
parent bbb5574224
commit 3919349891
1 changed files with 5 additions and 1 deletions
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6
net/wireless/nl80211.c
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@ -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]);