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cfg80211: reject invalid IBSS BSSIDs in wext compat code
author
Johannes Berg
<johannes.berg@intel.com>
Wed, 9 Apr 2014 20:32:16 +0000
(22:32 +0200)
committer
Johannes Berg
<johannes.berg@intel.com>
Thu, 10 Apr 2014 08:09:16 +0000
(10:09 +0200)
Don't allow using a multicast address as the BSSID, that
isn't a valid configuration.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
net/wireless/ibss.c
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diff --git
a/net/wireless/ibss.c
b/net/wireless/ibss.c
index
e16cc13
..
f55f6ff
100644
(file)
--- a/
net/wireless/ibss.c
+++ b/
net/wireless/ibss.c
@@
-481,6
+481,9
@@
int cfg80211_ibss_wext_siwap(struct net_device *dev,
if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid))
bssid = NULL;
+ if (bssid && !is_valid_ether_addr(bssid))
+ return -EINVAL;
+
/* both automatic */
if (!bssid && !wdev->wext.ibss.bssid)
return 0;