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hamradio/yam: fix info leak in ioctl 

The yam_ioctl() code fails to initialise the cmd field
of the struct yamdrv_ioctl_cfg. Add an explicit memset(0)
before filling the structure to avoid the 4-byte info leak.

Signed-off-by: Salva Peiró <speiro@ai2.upv.es>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Salva Peiró 2013-12-17 10:06:30 +01:00 committed by David S. Miller
parent e9db5c21d3
commit 8e3fbf8704
1 changed files with 1 additions and 0 deletions
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drivers/net/hamradio/yam.c
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@ -1057,6 +1057,7 @@ static int yam_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
break;
case SIOCYAMGCFG:
memset(&yi, 0, sizeof(yi));
yi.cfg.mask = 0xffffffff;
yi.cfg.iobase = yp->iobase;
yi.cfg.irq = yp->irq;