[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <1297360783-21452-1-git-send-email-segoon@openwall.com>
Date: Thu, 10 Feb 2011 20:59:42 +0300
From: Vasiliy Kulikov <segoon@...nwall.com>
To: linux-kernel@...r.kernel.org
Cc: security@...nel.org, Marcel Holtmann <marcel@...tmann.org>,
"Gustavo F. Padovan" <padovan@...fusion.mobi>,
"David S. Miller" <davem@...emloft.net>,
linux-bluetooth@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH] bluetooth: l2cap: fix 1 byte infoleak to userspace
Structure l2cap_options has one padding byte between max_tx and
txwin_size fields. This byte in "opts" is copied to userspace
uninitialized.
Signed-off-by: Vasiliy Kulikov <segoon@...nwall.com>
---
Compile tested only.
net/bluetooth/l2cap_sock.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index adf4169..21f5385 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -392,6 +392,7 @@ static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __us
switch (optname) {
case L2CAP_OPTIONS:
+ memset(&opts, 0, sizeof(opts));
opts.imtu = l2cap_pi(sk)->imtu;
opts.omtu = l2cap_pi(sk)->omtu;
opts.flush_to = l2cap_pi(sk)->flush_to;
--
1.7.0.4
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists