diff options
| author | Mathias Krause <minipli@googlemail.com> | 2012-08-15 11:31:50 +0000 |
|---|---|---|
| committer | Willy Tarreau <w@1wt.eu> | 2013-06-10 11:42:59 +0200 |
| commit | 473f13e1e624fc5007ff741dd50bb634ad38dbee (patch) | |
| tree | cc2a0e9bfcde04f332a7de1613bf8fb7fb7adf33 /net | |
| parent | c47abf3b0aa3281b9cd1bfb333ea853b90026d82 (diff) | |
Bluetooth: RFCOMM - Fix info leak via getsockname()
[ 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 <minipli@googlemail.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Johan Hedberg <johan.hedberg@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Diffstat (limited to 'net')
| -rw-r--r-- | net/bluetooth/rfcomm/sock.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c index 1ae3f80fe472..c47b7c48eba1 100644 --- a/net/bluetooth/rfcomm/sock.c +++ b/net/bluetooth/rfcomm/sock.c @@ -543,6 +543,7 @@ static int rfcomm_sock_getname(struct socket *sock, struct sockaddr *addr, int * 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) |