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mac80211: reject zero MAC address in add station

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This came up in fuzz testing, and really we don't consider
all-zeroes to be a valid MAC address in most places, so
also reject it here to avoid confusion later on.

Signed-off-by: Karthikeyan Periyasamy <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
[rewrite commit message]
Signed-off-by: Johannes Berg <[email protected]>
This commit is contained in:
Karthikeyan Periyasamy 2019-07-24 14:46:10 +05:30 • committed by Johannes Berg
commit 52dba8d7d5
1 changed files with 1 additions and 1 deletions
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2
net/mac80211/cfg.c
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@ -1543,7 +1543,7 @@ static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
if (ether_addr_equal(mac, sdata->vif.addr))
return -EINVAL;
if (is_multicast_ether_addr(mac))
if (!is_valid_ether_addr(mac))
return -EINVAL;
sta = sta_info_alloc(sdata, mac, GFP_KERNEL);