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Bluetooth: Fix l2cap_sock_setsockopt() with optname BT_RCVMTU
author
Amadeusz Sławiński
<amadeusz.slawinski@tieto.com>
Thu, 14 Jul 2016 08:50:23 +0000
(10:50 +0200)
committer
Marcel Holtmann
<marcel@holtmann.org>
Sun, 17 Jul 2016 17:59:26 +0000
(19:59 +0200)
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
net/bluetooth/l2cap_sock.c
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diff --git
a/net/bluetooth/l2cap_sock.c
b/net/bluetooth/l2cap_sock.c
index
388ee8b
..
1842141
100644
(file)
--- 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, (u
32
__user *) optval)) {
+ if (get_user(opt, (u
16
__user *) optval)) {
err = -EFAULT;
break;
}