Commit 75356a81 authored Jan 23, 2013 by Dan Carpenter Committed by David S. Miller Jan 27, 2013

ip6mr: limit IPv6 MRT_TABLE identifiers



We did this for IPv4 in b49d3c1e "net: ipmr: limit MRT_TABLE
identifiers" but we need to do it for IPv6 as well.  On IPv6 the name
is "pim6reg" instead of "pimreg" so there is one less digit allowed.

The strcpy() is in ip6mr_reg_vif().

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent ce11ff5e

net/ipv6/ip6mr.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -1710,6 +1710,9 @@ int ip6_mroute_setsockopt(struct sock sk, int optname, char __user optval, uns
		return -EINVAL;
		if (get_user(v, (u32 __user *)optval))
		return -EFAULT;
		/* "pim6reg%u" should not exceed 16 bytes (IFNAMSIZ) */
		if (v != RT_TABLE_DEFAULT && v >= 100000000)
		return -EINVAL;
		if (sk == mrt->mroute6_sk)
		return -EBUSY;