| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.12 066/106] net: Zero terminate ifr_name in dev_ifname(). | Date | Wed, 9 Aug 2017 09:52:50 -0700 |
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4.12-stable review patch. If anyone has any objections, please let me know.
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From: "David S. Miller" <davem@davemloft.net>
[ Upstream commit 63679112c536289826fec61c917621de95ba2ade ]
The ifr.ifr_name is passed around and assumed to be NULL terminated.
Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- net/core/dev_ioctl.c | 1 + 1 file changed, 1 insertion(+)
--- a/net/core/dev_ioctl.c +++ b/net/core/dev_ioctl.c @@ -28,6 +28,7 @@ static int dev_ifname(struct net *net, s if (copy_from_user(&ifr, arg, sizeof(struct ifreq))) return -EFAULT; + ifr.ifr_name[IFNAMSIZ-1] = 0; error = netdev_get_name(net, ifr.ifr_name, ifr.ifr_ifindex); if (error)
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