netfilter: ipset: forbid family for hash:mac sets
[ Upstream commit cbdebe481a
]
Userspace `ipset` command forbids family option for hash:mac type:
ipset create test hash:mac family inet4
ipset v6.30: Unknown argument: `family'
However, this check is not done in kernel itself. When someone use
external netlink applications (pyroute2 python library for example), one
can create hash:mac with invalid family and inconsistant results from
userspace (`ipset` command cannot read set content anymore).
This patch enforce the logic in kernel, and forbids insertion of
hash:mac with a family set.
Since IP_SET_PROTO_UNDEF is defined only for hash:mac, this patch has no
impact on other hash:* sets
Signed-off-by: Florent Fourcot <florent.fourcot@wifirst.fr>
Signed-off-by: Victorien Molle <victorien.molle@wifirst.fr>
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pull/10/head
parent
a47ece2b17
commit
52f072f580
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@ -1241,7 +1241,10 @@ IPSET_TOKEN(HTYPE, _create)(struct net *net, struct ip_set *set,
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pr_debug("Create set %s with family %s\n",
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set->name, set->family == NFPROTO_IPV4 ? "inet" : "inet6");
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#ifndef IP_SET_PROTO_UNDEF
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#ifdef IP_SET_PROTO_UNDEF
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if (set->family != NFPROTO_UNSPEC)
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return -IPSET_ERR_INVALID_FAMILY;
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#else
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if (!(set->family == NFPROTO_IPV4 || set->family == NFPROTO_IPV6))
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return -IPSET_ERR_INVALID_FAMILY;
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#endif
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