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Diffstat (limited to 'net/ethtool/ioctl.c')
-rw-r--r--net/ethtool/ioctl.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c
index 237ffe5440ef..8797533ddc4b 100644
--- a/net/ethtool/ioctl.c
+++ b/net/ethtool/ioctl.c
@@ -2586,6 +2586,9 @@ static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr)
if (copy_from_user(&fecparam, useraddr, sizeof(fecparam)))
return -EFAULT;
+ if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE_BIT)
+ return -EINVAL;
+
fecparam.active_fec = 0;
fecparam.reserved = 0;