ip6_tunnel: better validate user provided tunnel names
authorEric Dumazet <edumazet@google.com>
Thu, 5 Apr 2018 13:39:30 +0000 (06:39 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 12 Apr 2018 10:32:25 +0000 (12:32 +0200)
commit109dce20c6ed7c29ac56776381d3daf7dd941374
tree7ed54bbbe0aa1a9db6bdb7143b2b1c0c4819b9e2
parent72363c63b0708fb3e8e0ba9fb9e0d405e97153ba
ip6_tunnel: better validate user provided tunnel names

[ Upstream commit db7a65e3ab78e5b1c4b17c0870ebee35a4ee3257 ]

Use valid_name() to make sure user does not provide illegal
device name.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/ipv6/ip6_tunnel.c