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Bluetooth: Use kzfree instead of kfree in security manager

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Within the security manager, it makes sense to use kzfree instead of
kfree for all data structures. This ensures that no key material leaks
by accident.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2015-03-16 01:10:18 -07:00 committed by Johan Hedberg
parent aefedc1a4c
commit 276812ec3e
1 changed files with 8 additions and 8 deletions
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16
net/bluetooth/smp.c
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@ -681,9 +681,9 @@ static void smp_chan_destroy(struct l2cap_conn *conn)
complete = test_bit(SMP_FLAG_COMPLETE, &smp->flags);
mgmt_smp_complete(hcon, complete);
kfree(smp->csrk);
kfree(smp->slave_csrk);
kfree(smp->link_key);
kzfree(smp->csrk);
kzfree(smp->slave_csrk);
kzfree(smp->link_key);
crypto_free_blkcipher(smp->tfm_aes);
crypto_free_hash(smp->tfm_cmac);
@ -717,7 +717,7 @@ static void smp_chan_destroy(struct l2cap_conn *conn)
}
chan->data = NULL;
kfree(smp);
kzfree(smp);
hci_conn_drop(hcon);
}
@ -1097,13 +1097,13 @@ static void sc_generate_link_key(struct smp_chan *smp)
return;
if (smp_h6(smp->tfm_cmac, smp->tk, tmp1, smp->link_key)) {
kfree(smp->link_key);
kzfree(smp->link_key);
smp->link_key = NULL;
return;
}
if (smp_h6(smp->tfm_cmac, smp->link_key, lebr, smp->link_key)) {
kfree(smp->link_key);
kzfree(smp->link_key);
smp->link_key = NULL;
return;
}
@ -1300,7 +1300,7 @@ static struct smp_chan *smp_chan_create(struct l2cap_conn *conn)
smp->tfm_aes = crypto_alloc_blkcipher("ecb(aes)", 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(smp->tfm_aes)) {
BT_ERR("Unable to create ECB crypto context");
kfree(smp);
kzfree(smp);
return NULL;
}
@ -1308,7 +1308,7 @@ static struct smp_chan *smp_chan_create(struct l2cap_conn *conn)
if (IS_ERR(smp->tfm_cmac)) {
BT_ERR("Unable to create CMAC crypto context");
crypto_free_blkcipher(smp->tfm_aes);
kfree(smp);
kzfree(smp);
return NULL;
}