Commit aaab73f8 authored by Sabrina Dubroca's avatar Sabrina Dubroca Committed by David S. Miller

macsec: clear encryption keys from the stack after setting up offload

macsec_add_rxsa and macsec_add_txsa copy the key to an on-stack
offloading context to pass it to the drivers, but leaves it there when
it's done. Clear it with memzero_explicit as soon as it's not needed
anymore.

Fixes: 3cf3227a ("net: macsec: hardware offloading infrastructure")
Signed-off-by: default avatarSabrina Dubroca <sd@queasysnail.net>
Reviewed-by: default avatarAntoine Tenart <atenart@kernel.org>
Reviewed-by: default avatarLeon Romanovsky <leonro@nvidia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 80df4706
......@@ -1839,6 +1839,7 @@ static int macsec_add_rxsa(struct sk_buff *skb, struct genl_info *info)
secy->key_len);
err = macsec_offload(ops->mdo_add_rxsa, &ctx);
memzero_explicit(ctx.sa.key, secy->key_len);
if (err)
goto cleanup;
}
......@@ -2081,6 +2082,7 @@ static int macsec_add_txsa(struct sk_buff *skb, struct genl_info *info)
secy->key_len);
err = macsec_offload(ops->mdo_add_txsa, &ctx);
memzero_explicit(ctx.sa.key, secy->key_len);
if (err)
goto cleanup;
}
......
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