From 5c93b99d27ffe7d1a3c6d43429bd1966b4c353dc Mon Sep 17 00:00:00 2001 From: =?utf8?q?Amadeusz=20S=C5=82awi=C5=84ski?= Date: Thu, 14 Jul 2016 10:50:23 +0200 Subject: [PATCH] Bluetooth: Fix l2cap_sock_setsockopt() with optname BT_RCVMTU MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit commit 23bc6ab0a0912146fd674a0becc758c3162baabc upstream. 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 Signed-off-by: Marcel Holtmann Signed-off-by: Greg Kroah-Hartman --- net/bluetooth/l2cap_sock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c index 1bb551527044..d9bbbded49ef 100644 --- a/net/bluetooth/l2cap_sock.c +++ b/net/bluetooth/l2cap_sock.c @@ -927,7 +927,7 @@ 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; } -- 2.34.1