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 <spe...@ai2.upv.es>
CC: <sta...@vger.kernel.org>
---
drivers/net/hamradio/yam.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/hamradio/yam.c b/drivers/net/hamradio/yam.c
index 1971411..bb02c8a 100644
--- a/drivers/net/hamradio/yam.c
+++ b/drivers/net/hamradio/yam.c
@@ -953,6 +953,7 @@ static int yam_ioctl(struct net_device *dev, struct ifreq
*ifr, int cmd)
struct yamdrv_ioctl_mcs *ym;
int ioctl_cmd;
+ memset(&yi, 0, sizeof(yi));
if (copy_from_user(&ioctl_cmd, ifr->ifr_data, sizeof(int)))
return -EFAULT;
--
1.7.10.4
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
