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: Thomas Graf <[EMAIL PROTECTED]>
Index: net-2.6.26/net/core/rtnetlink.c
===================================================================
--- net-2.6.26.orig/net/core/rtnetlink.c 2008-02-19 20:30:08.000000000
+0100
+++ net-2.6.26/net/core/rtnetlink.c 2008-02-20 00:39:54.000000000 +0100
@@ -693,10 +693,12 @@
[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 },
};
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