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pcmcia: synclink_cs: fix information leak to userland

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commit 5b917a1420 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>
This commit is contained in:
Vasiliy Kulikov 2010-10-17 18:41:24 +04:00 committed by Greg Kroah-Hartman
parent 89323c1e44
commit f055e6dfa6
1 changed files with 2 additions and 0 deletions
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2
drivers/char/pcmcia/synclink_cs.c
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@ -4164,6 +4164,8 @@ 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 */