Commit 6da47287 authored Jul 14, 2016 by Amadeusz Sławiński Committed by Sasha Levin Aug 22, 2016

Bluetooth: Fix l2cap_sock_setsockopt() with optname BT_RCVMTU



[ Upstream commit 23bc6ab0a0912146fd674a0becc758c3162baabc ]

When we retrieve imtu value from userspace we should use 16 bit pointer
cast instead of 32 as it's defined that way in headers. Fixes setsockopt
calls on big-endian platforms.

Signed-off-by: Amadeusz Sławiński <amadeusz.slawinski@tieto.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>

parent b94d5a7f

net/bluetooth/l2cap_sock.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -922,7 +922,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
		break;
		}

		if (get_user(opt, (u32 __user *) optval)) {
		if (get_user(opt, (u16 __user *) optval)) {
		err = -EFAULT;
		break;
		}