From: Matias Karhumaa matias.karhumaa@gmail.com
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
--- net/bluetooth/l2cap_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -1352,7 +1352,7 @@ static bool l2cap_check_enc_key_size(str * 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)