This is a note to let you know that I've just added the patch titled
Bluetooth: RFCOMM - Fix info leak via getsockname()
to the 3.4-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-rfcomm-fix-info-leak-via-getsockname.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From cf376769b392b18638422874acfb7d2d7e532903 Mon Sep 17 00:00:00 2001
From: Mathias Krause <[email protected]>
Date: Wed, 15 Aug 2012 11:31:50 +0000
Subject: Bluetooth: RFCOMM - Fix info leak via getsockname()
From: Mathias Krause <[email protected]>
[ Upstream commit 9344a972961d1a6d2c04d9008b13617bcb6ec2ef ]
The RFCOMM code fails to initialize the trailing padding byte of struct
sockaddr_rc added for alignment. It that for leaks one byte kernel stack
via the getsockname() syscall. Add an explicit memset(0) before filling
the structure to avoid the info leak.
Signed-off-by: Mathias Krause <[email protected]>
Cc: Marcel Holtmann <[email protected]>
Cc: Gustavo Padovan <[email protected]>
Cc: Johan Hedberg <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
net/bluetooth/rfcomm/sock.c | 1 +
1 file changed, 1 insertion(+)
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -546,6 +546,7 @@ static int rfcomm_sock_getname(struct so
BT_DBG("sock %p, sk %p", sock, sk);
+ memset(sa, 0, sizeof(*sa));
sa->rc_family = AF_BLUETOOTH;
sa->rc_channel = rfcomm_pi(sk)->channel;
if (peer)
Patches currently in stable-queue which might be from [email protected] are
queue-3.4/ipvs-fix-info-leak-in-getsockopt-ip_vs_so_get_timeout.patch
queue-3.4/bluetooth-rfcomm-fix-info-leak-via-getsockname.patch
queue-3.4/bluetooth-hci-fix-info-leak-in-getsockopt-hci_filter.patch
queue-3.4/bluetooth-hci-fix-info-leak-via-getsockname.patch
queue-3.4/atm-fix-info-leak-in-getsockopt-so_atmpvc.patch
queue-3.4/llc-fix-info-leak-via-getsockname.patch
queue-3.4/net-fix-info-leak-in-compat-dev_ifconf.patch
queue-3.4/bluetooth-rfcomm-fix-info-leak-in-getsockopt-bt_security.patch
queue-3.4/atm-fix-info-leak-via-getsockname.patch
queue-3.4/bluetooth-l2cap-fix-info-leak-via-getsockname.patch
queue-3.4/dccp-fix-info-leak-via-getsockopt-dccp_sockopt_ccid_tx_info.patch
queue-3.4/bluetooth-rfcomm-fix-info-leak-in-ioctl-rfcommgetdevlist.patch
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