Messages in this thread Patch in this message |  | | From | Greg Kroah-Hartman <> | Subject | [ 21/32] wanxl: fix info leak in ioctl | Date | Fri, 1 Nov 2013 14:43:32 -0700 |
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3.4-stable review patch. If anyone has any objections, please let me know.
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From: Salva Peiró <speiro@ai2.upv.es>
[ Upstream commit 2b13d06c9584b4eb773f1e80bbaedab9a1c344e1 ]
The wanxl_ioctl() code fails to initialize the two padding bytes of struct sync_serial_settings after the ->loopback member. Add an explicit memset(0) before filling the structure to avoid the info leak.
Signed-off-by: Salva Peiró <speiro@ai2.upv.es> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/net/wan/wanxl.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/net/wan/wanxl.c +++ b/drivers/net/wan/wanxl.c @@ -355,6 +355,7 @@ static int wanxl_ioctl(struct net_device ifr->ifr_settings.size = size; /* data size wanted */ return -ENOBUFS; } + memset(&line, 0, sizeof(line)); line.clock_type = get_status(port)->clocking; line.clock_rate = 0; line.loopback = 0;
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