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authorVasiliy Kulikov <segooon@gmail.com>2010-10-17 18:41:24 +0400
committerDominik Brodowski <linux@dominikbrodowski.net>2010-10-21 17:29:23 +0200
commit5b917a1420d3d1a9c8da49fb0090692dc9aaee86 (patch)
tree930439eff752e5aababfed19cf4bc5b5be65353d /drivers/char
parent97299c726881603f44c30be8718c24015e7a4676 (diff)
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 <segooon@gmail.com> CC: stable@kernel.org Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/pcmcia/synclink_cs.c2
1 files changed, 2 insertions, 0 deletions
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 */