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Bluetooth: L2CAP: Fix not responding with L2CAP_CR_LE_ENCRYPTION

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[ Upstream commit 03dba9cea72f977e873e4e60e220fa596959dd8f ]

Depending on the security set the response to L2CAP_LE_CONN_REQ shall be
just L2CAP_CR_LE_ENCRYPTION if only encryption when BT_SECURITY_MEDIUM
is selected since that means security mode 2 which doesn't require
authentication which is something that is covered in the qualification
test L2CAP/LE/CFC/BV-25-C.

Link: https://github.com/bluez/bluez/issues/1270
Fixes: 27e2d4c8d2 ("Bluetooth: Add basic LE L2CAP connect request receiving support")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Luiz Augusto von Dentz
2025-05-28 14:53:11 -04:00
committed by Greg Kroah-Hartman
parent 2a98786e25
commit b788cebf72
1 changed files with 2 additions and 1 deletions
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net/bluetooth/l2cap_core.c
+2 -1
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@@ -4835,7 +4835,8 @@ static int l2cap_le_connect_req(struct l2cap_conn *conn,
if (!smp_sufficient_security(conn->hcon, pchan->sec_level, if (!smp_sufficient_security(conn->hcon, pchan->sec_level,
SMP_ALLOW_STK)) { SMP_ALLOW_STK)) {
result = L2CAP_CR_LE_AUTHENTICATION; result = pchan->sec_level == BT_SECURITY_MEDIUM ?
L2CAP_CR_LE_ENCRYPTION : L2CAP_CR_LE_AUTHENTICATION;
chan = NULL; chan = NULL;
goto response_unlock; goto response_unlock;
} }