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| author | Marcel Holtmann <marcel@holtmann.org> | 2015-03-17 11:38:24 -0700 |
|---|---|---|
| committer | Johan Hedberg <johan.hedberg@intel.com> | 2015-03-18 08:30:03 +0200 |
| commit | 63511f6d5ba0c20850448991be297751ddb6798c (patch) | |
| tree | dbc670d6296219f8fa8882b287ca0967944f2fc5 /net | |
| parent | 19c5ce9c5ff80a26cba3afb3684d56539444ee40 (diff) | |
| download | linux-63511f6d5ba0c20850448991be297751ddb6798c.tar.gz | |
Bluetooth: Fix potential NULL dereference in SMP channel setup
When the allocation of the L2CAP channel for the BR/EDR security manager fails, then the smp variable might be NULL. In that case do not try to free the non-existing crypto contexts Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/bluetooth/smp.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c index 6a5afb972358..1ec3f66b5a74 100644 --- a/net/bluetooth/smp.c +++ b/net/bluetooth/smp.c @@ -3124,9 +3124,11 @@ static struct l2cap_chan *smp_add_cid(struct hci_dev *hdev, u16 cid) create_chan: chan = l2cap_chan_create(); if (!chan) { - crypto_free_blkcipher(smp->tfm_aes); - crypto_free_hash(smp->tfm_cmac); - kzfree(smp); + if (smp) { + crypto_free_blkcipher(smp->tfm_aes); + crypto_free_hash(smp->tfm_cmac); + kzfree(smp); + } return ERR_PTR(-ENOMEM); } |