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Commit 76e87306 authored by Thomas Graf's avatar Thomas Graf Committed by David S. Miller
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[RTNL]: Add missing link netlink attribute policy definitions 



IFLA_LINK is no longer a write-only attribute on the kernel side and
must thus be validated. Same goes for the newly introduced
IFLA_LINKINFO.

Fixes undefined behaviour if either of the attributes are not well
formed.

Signed-off-by: default avatarThomas Graf <tgraf@suug.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 12aa343a

net/core/rtnetlink.c

+2 −0
Original line number Diff line number Diff line
@@ -689,10 +689,12 @@ const struct nla_policy ifla_policy[IFLA_MAX+1] = { 
	[IFLA_BROADCAST]	= { .type = NLA_BINARY, .len = MAX_ADDR_LEN },

	[IFLA_MAP]		= { .len = sizeof(struct rtnl_link_ifmap) },

	[IFLA_MTU]		= { .type = NLA_U32 },

	[IFLA_LINK]		= { .type = NLA_U32 },

	[IFLA_TXQLEN]		= { .type = NLA_U32 },

	[IFLA_WEIGHT]		= { .type = NLA_U32 },

	[IFLA_OPERSTATE]	= { .type = NLA_U8 },

	[IFLA_LINKMODE]		= { .type = NLA_U8 },

	[IFLA_LINKINFO]		= { .type = NLA_NESTED },

	[IFLA_NET_NS_PID]	= { .type = NLA_U32 },

};