3.16.60-rc1 review patch. If anyone has any objections, please let me know.
------------------ From: Eric Dumazet <[email protected]> commit 537b361fbcbcc3cd6fe2bb47069fd292b9256d16 upstream. Use valid_name() to make sure user does not provide illegal device name. Fixes: ed1efb2aefbb ("ipv6: Add support for IPsec virtual tunnel interfaces") Signed-off-by: Eric Dumazet <[email protected]> Cc: Steffen Klassert <[email protected]> Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Ben Hutchings <[email protected]> --- net/ipv6/ip6_vti.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) --- a/net/ipv6/ip6_vti.c +++ b/net/ipv6/ip6_vti.c @@ -195,10 +195,13 @@ static struct ip6_tnl *vti6_tnl_create(s char name[IFNAMSIZ]; int err; - if (p->name[0]) + if (p->name[0]) { + if (!dev_valid_name(p->name)) + goto failed; strlcpy(name, p->name, IFNAMSIZ); - else + } else { sprintf(name, "ip6_vti%%d"); + } dev = alloc_netdev(sizeof(*t), name, vti6_dev_setup); if (dev == NULL)
