Re: [RFC v2 1/2] cfg80211: support 4-way handshake offloading for WPA/WPA2-PSK

[Johannes Berg <johannes@sipsolutions.net>]

> The .len verifies that it's at least that long. We're thus ignoring
> additional bytes in the PSK case if they're present, which I suppose
> we should fix by checking the exact length in the code separately.
> 
IOW, I'll add this:

--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -8044,6 +8044,8 @@ static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
 		if (!wiphy_ext_feature_isset(&rdev->wiphy,
 					     NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
 			return -EINVAL;
+		if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
+			return -EINVAL;
 		settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
 	}
 

johannes