From: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
This patch makes mac80211 refuse a WEP key whose length is not WEP40 nor
WEP104.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
Signed-off-by: Tomas Winkler <tomas.winkler@xxxxxxxxx>
---
include/net/mac80211.h | 9 +++++++++
net/mac80211/wext.c | 7 +++++++
2 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 02c79e6..6a6c4bc 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -557,6 +557,15 @@ 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
diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c
index df0531c..1babb97 100644
--- a/net/mac80211/wext.c
+++ b/net/mac80211/wext.c
@@ -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))
--
1.5.4.1
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