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cfg80211: clear connect keys when freeing them

Browse source 
When freeing the connect keys, clear the memory to avoid
having the key material stick around in memory "forever".

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2014-09-10 13:39:54 +03:00
parent b1e9be8775
commit b47f610bd6
5 changed files with 11 additions and 11 deletions
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4
net/wireless/ibss.c
View file

@ -115,7 +115,7 @@ static int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
}
if (WARN_ON(wdev->connect_keys))
kfree(wdev->connect_keys);
kzfree(wdev->connect_keys);
wdev->connect_keys = connkeys;
wdev->ibss_fixed = params->channel_fixed;
@ -161,7 +161,7 @@ static void __cfg80211_clear_ibss(struct net_device *dev, bool nowext)
ASSERT_WDEV_LOCK(wdev);
kfree(wdev->connect_keys);
kzfree(wdev->connect_keys);
wdev->connect_keys = NULL;
rdev_set_qos_map(rdev, dev, NULL);

8
net/wireless/nl80211.c
View file

@ -6866,7 +6866,7 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
if (err)
kfree(connkeys);
kzfree(connkeys);
return err;
}
@ -7235,7 +7235,7 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
kfree(connkeys);
kzfree(connkeys);
return -EINVAL;
}
memcpy(&connect.ht_capa,
@ -7253,7 +7253,7 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
kfree(connkeys);
kzfree(connkeys);
return -EINVAL;
}
memcpy(&connect.vht_capa,
@ -7273,7 +7273,7 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
wdev_unlock(dev->ieee80211_ptr);
if (err)
kfree(connkeys);
kzfree(connkeys);
return err;
}

6
net/wireless/sme.c
View file

@ -641,7 +641,7 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
}
if (status != WLAN_STATUS_SUCCESS) {
kfree(wdev->connect_keys);
kzfree(wdev->connect_keys);
wdev->connect_keys = NULL;
wdev->ssid_len = 0;
if (bss) {
@ -918,7 +918,7 @@ int cfg80211_connect(struct cfg80211_registered_device *rdev,
ASSERT_WDEV_LOCK(wdev);
if (WARN_ON(wdev->connect_keys)) {
kfree(wdev->connect_keys);
kzfree(wdev->connect_keys);
wdev->connect_keys = NULL;
}
@ -978,7 +978,7 @@ int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
ASSERT_WDEV_LOCK(wdev);
kfree(wdev->connect_keys);
kzfree(wdev->connect_keys);
wdev->connect_keys = NULL;
if (wdev->conn)

2
net/wireless/util.c
View file

@ -797,7 +797,7 @@ void cfg80211_upload_connect_keys(struct wireless_dev *wdev)
netdev_err(dev, "failed to set mgtdef %d\n", i);
}
kfree(wdev->connect_keys);
kzfree(wdev->connect_keys);
wdev->connect_keys = NULL;
}

2
net/wireless/wext-sme.c
View file

@ -57,7 +57,7 @@ int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
err = cfg80211_connect(rdev, wdev->netdev,
&wdev->wext.connect, ck, prev_bssid);
if (err)
kfree(ck);
kzfree(ck);
return err;
}