This is a note to let you know that I've just added the patch titled
Bluetooth: SCO - Fix missing msg_namelen update in sco_sock_recvmsg()
to the 3.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
bluetooth-sco-fix-missing-msg_namelen-update-in-sco_sock_recvmsg.patch
and it can be found in the queue-3.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c4f7dec1cade767bc4f32a23dd32a3a99d6cafea Mon Sep 17 00:00:00 2001
From: Mathias Krause <minipli@xxxxxxxxxxxxxx>
Date: Sun, 7 Apr 2013 01:51:51 +0000
Subject: Bluetooth: SCO - Fix missing msg_namelen update in sco_sock_recvmsg()
From: Mathias Krause <minipli@xxxxxxxxxxxxxx>
[ Upstream commit c8c499175f7d295ef867335bceb9a76a2c3cdc38 ]
If the socket is in state BT_CONNECT2 and BT_SK_DEFER_SETUP is set in
the flags, sco_sock_recvmsg() returns early with 0 without updating the
possibly set msg_namelen member. This, in turn, leads to a 128 byte
kernel stack leak in net/socket.c.
Fix this by updating msg_namelen in this case. For all other cases it
will be handled in bt_sock_recvmsg().
Signed-off-by: Mathias Krause <minipli@xxxxxxxxxxxxxx>
Cc: Marcel Holtmann <marcel@xxxxxxxxxxxx>
Cc: Gustavo Padovan <gustavo@xxxxxxxxxxx>
Cc: Johan Hedberg <johan.hedberg@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/bluetooth/sco.c | 1 +
1 file changed, 1 insertion(+)
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -667,6 +667,7 @@ static int sco_sock_recvmsg(struct kiocb
test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
hci_conn_accept(pi->conn->hcon, 0);
sk->sk_state = BT_CONFIG;
+ msg->msg_namelen = 0;
release_sock(sk);
return 0;
Patches currently in stable-queue which might be from minipli@xxxxxxxxxxxxxx are
queue-3.8/irda-fix-missing-msg_namelen-update-in-irda_recvmsg_dgram.patch
queue-3.8/bluetooth-rfcomm-fix-missing-msg_namelen-update-in-rfcomm_sock_recvmsg.patch
queue-3.8/llc-fix-missing-msg_namelen-update-in-llc_ui_recvmsg.patch
queue-3.8/nfc-llcp-fix-info-leaks-via-msg_name-in-llcp_sock_recvmsg.patch
queue-3.8/atm-update-msg_namelen-in-vcc_recvmsg.patch
queue-3.8/iucv-fix-missing-msg_namelen-update-in-iucv_sock_recvmsg.patch
queue-3.8/ax25-fix-info-leak-via-msg_name-in-ax25_recvmsg.patch
queue-3.8/tipc-fix-info-leaks-via-msg_name-in-recv_msg-recv_stream.patch
queue-3.8/netrom-fix-info-leak-via-msg_name-in-nr_recvmsg.patch
queue-3.8/caif-fix-missing-msg_namelen-update-in-caif_seqpkt_recvmsg.patch
queue-3.8/l2tp-fix-info-leak-in-l2tp_ip6_recvmsg.patch
queue-3.8/bluetooth-sco-fix-missing-msg_namelen-update-in-sco_sock_recvmsg.patch
queue-3.8/bluetooth-fix-possible-info-leak-in-bt_sock_recvmsg.patch
queue-3.8/rose-fix-info-leak-via-msg_name-in-rose_recvmsg.patch
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