From: Greg KH <gregkh@suse.de>
To: linux-kernel@vger.kernel.org, stable@kernel.org
Cc: stable-review@kernel.org, torvalds@linux-foundation.org,
akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk,
Vasiliy Kulikov <segooon@gmail.com>,
Dominik Brodowski <linux@dominikbrodowski.net>
Subject: [07/82] pcmcia: synclink_cs: fix information leak to userland
Date: Fri, 19 Nov 2010 13:55:28 -0800 [thread overview]
Message-ID: <20101119215639.320143733@clark.site> (raw)
In-Reply-To: <20101119215658.GA7804@kroah.com
2.6.35-stable review patch. If anyone has any objections, please let us know.
------------------
From: Vasiliy Kulikov <segooon@gmail.com>
commit 5b917a1420d3d1a9c8da49fb0090692dc9aaee86 upstream.
Structure new_line is copied to userland with some padding fields unitialized.
It leads to leaking of stack memory.
Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/char/pcmcia/synclink_cs.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -4132,6 +4132,8 @@ static int hdlcdev_ioctl(struct net_devi
if (cmd != SIOCWANDEV)
return hdlc_ioctl(dev, ifr, cmd);
+ memset(&new_line, 0, size);
+
switch(ifr->ifr_settings.type) {
case IF_GET_IFACE: /* return current sync_serial_settings */
reply other threads:[~2010-11-19 22:34 UTC|newest]
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