linux-kernel - [PATCH 3.11 58/94] Staging: sb105x: info leak in mp_get

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Message-Id: <20131109065208.370792392@linuxfoundation.org>
Date:	Fri,  8 Nov 2013 22:52:04 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Nico Golde <nico@...lde.de>,
	Fabian Yamaguchi <fabs@...sec.de>,
	Dan Carpenter <dan.carpenter@...cle.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [PATCH 3.11 58/94] Staging: sb105x: info leak in mp_get_count()

3.11-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@...cle.com>

commit a8b33654b1e3b0c74d4a1fed041c9aae50b3c427 upstream.

The icount.reserved[] array isn't initialized so it leaks stack
information to userspace.

Reported-by: Nico Golde <nico@...lde.de>
Reported-by: Fabian Yamaguchi <fabs@...sec.de>
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/staging/sb105x/sb_pci_mp.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/staging/sb105x/sb_pci_mp.c
+++ b/drivers/staging/sb105x/sb_pci_mp.c
@@ -1063,7 +1063,7 @@ static int mp_wait_modem_status(struct s
 
 static int mp_get_count(struct sb_uart_state *state, struct serial_icounter_struct *icnt)
 {
-	struct serial_icounter_struct icount;
+	struct serial_icounter_struct icount = {};
 	struct sb_uart_icount cnow;
 	struct sb_uart_port *port = state->port;
 


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