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mac80211: don't accept WEP keys other than WEP40 and WEP104

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This patch makes mac80211 refuse a WEP key whose length is not WEP40 nor
WEP104.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Emmanuel Grumbach 2008-06-28 02:50:13 +03:00 committed by John W. Linville
parent 1bcca3c463
commit 23976efedd
2 changed files with 16 additions and 0 deletions
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9
include/net/mac80211.h
View file

@ -595,6 +595,15 @@ enum ieee80211_key_alg {
ALG_CCMP,
};
/**
* enum ieee80211_key_len - key length
* @WEP40: WEP 5 byte long key
* @WEP104: WEP 13 byte long key
*/
enum ieee80211_key_len {
LEN_WEP40 = 5,
LEN_WEP104 = 13,
};
/**
* enum ieee80211_key_flags - key flags

7
net/mac80211/wext.c
View file

@ -95,6 +95,13 @@ static int ieee80211_set_encryption(struct net_device *dev, u8 *sta_addr,
}
}
if (alg == ALG_WEP &&
key_len != LEN_WEP40 && key_len != LEN_WEP104) {
ieee80211_key_free(key);
err = -EINVAL;
goto out_unlock;
}
ieee80211_key_link(key, sdata, sta);
if (set_tx_key || (!sta && !sdata->default_key && key))