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Commit f67ed26f authored by David S. Miller's avatar David S. Miller Committed by David S. Miller
Browse files

[NET]: Ensure device name passed to SO_BINDTODEVICE is NULL terminated. 



Found by Solar Designer.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a1a8feed

net/core/sock.c

+3 −2
Original line number Diff line number Diff line
@@ -404,8 +404,9 @@ set_rcvbuf: 
			if (!valbool) {

				sk->sk_bound_dev_if = 0;

			} else {

				if (optlen > IFNAMSIZ) 

					optlen = IFNAMSIZ; 

				if (optlen > IFNAMSIZ - 1)

					optlen = IFNAMSIZ - 1;

				memset(devname, 0, sizeof(devname));

				if (copy_from_user(devname, optval, optlen)) {

					ret = -EFAULT;

					break;