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Bluetooth: Fix faulty expression for minimum encryption key size check 

commit eca94432934fe5f141d084f2e36ee2c0e614cc04 upstream.

Fix minimum encryption key size check so that HCI_MIN_ENC_KEY_SIZE is
also allowed as stated in the comment.

This bug caused connection problems with devices having maximum
encryption key size of 7 octets (56-bit).

Fixes: 693cd8ce3f88 ("Bluetooth: Fix regression with minimum encryption key size alignment")
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=203997
Signed-off-by: Matias Karhumaa <matias.karhumaa@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Matias Karhumaa 2019-07-02 16:35:09 +02:00 committed by syphyr
parent 8b2fd5dcdf
commit 6cb10b3724
1 changed files with 1 additions and 1 deletions
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2
net/bluetooth/l2cap_core.c
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@ -1178,7 +1178,7 @@ static bool l2cap_check_enc_key_size(struct hci_conn *hcon)
* actually encrypted before enforcing a key size.
*/
return (!test_bit(HCI_CONN_ENCRYPT, &hcon->flags) ||
hcon->enc_key_size > HCI_MIN_ENC_KEY_SIZE);
hcon->enc_key_size >= HCI_MIN_ENC_KEY_SIZE);
}
static void l2cap_do_start(struct l2cap_chan *chan)