From 5b917a1420d3d1a9c8da49fb0090692dc9aaee86 Mon Sep 17 00:00:00 2001 From: Vasiliy Kulikov Date: Sun, 17 Oct 2010 18:41:24 +0400 Subject: [PATCH] pcmcia: synclink_cs: fix information leak to userland Structure new_line is copied to userland with some padding fields unitialized. It leads to leaking of stack memory. Signed-off-by: Vasiliy Kulikov CC: stable@kernel.org Signed-off-by: Dominik Brodowski --- drivers/char/pcmcia/synclink_cs.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c index d97a53cccdc5..be1810057607 100644 --- a/drivers/char/pcmcia/synclink_cs.c +++ b/drivers/char/pcmcia/synclink_cs.c @@ -4097,6 +4097,8 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 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 */ -- 2.30.2