提交 fe100acd 编写于 作者: J Johannes Berg 提交者: John W. Linville

cfg80211: fix locking in action frame TX

Accesses to "wdev->current_bss" must be
locked with the wdev lock, which action
frame transmission is missing.

Cc: stable@kernel.org [2.6.33+]
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
上级 a9fda88b
......@@ -843,13 +843,19 @@ int cfg80211_mlme_action(struct cfg80211_registered_device *rdev,
return -EINVAL;
if (mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) {
/* Verify that we are associated with the destination AP */
wdev_lock(wdev);
if (!wdev->current_bss ||
memcmp(wdev->current_bss->pub.bssid, mgmt->bssid,
ETH_ALEN) != 0 ||
(wdev->iftype == NL80211_IFTYPE_STATION &&
memcmp(wdev->current_bss->pub.bssid, mgmt->da,
ETH_ALEN) != 0))
ETH_ALEN) != 0)) {
wdev_unlock(wdev);
return -ENOTCONN;
}
wdev_unlock(wdev);
}
if (memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0)
......
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