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wifi: mac80211: check key taint for beacon protection

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This will likely never happen, but for completeness check
the key taint flag before using a key for beacon protection.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230301115906.cf2c3fee6f1f.I2f19b3e04e31c99bed3c9dc71935bf513b2cd177@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2023-03-01 12:09:16 +02:00
parent 3a867c7eef
commit 3ffcc659dc
1 changed files with 6 additions and 0 deletions
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6
net/mac80211/tx.c
View file

@ -5115,6 +5115,12 @@ static int ieee80211_beacon_protect(struct sk_buff *skb,
tx.key = rcu_dereference(link->default_beacon_key);
if (!tx.key)
return 0;
if (unlikely(tx.key->flags & KEY_FLAG_TAINTED)) {
tx.key = NULL;
return -EINVAL;
}
tx.local = local;
tx.sdata = sdata;
__skb_queue_head_init(&tx.skbs);