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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: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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1 changed files with 5 additions and 1 deletions
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@ -4527,8 +4527,12 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
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wiphy = &rdev->wiphy;
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if (info->attrs[NL80211_ATTR_MAC])
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if (info->attrs[NL80211_ATTR_MAC]) {
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ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
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if (!is_valid_ether_addr(ibss.bssid))
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return -EINVAL;
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}
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ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
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ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
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