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ila: Fix tailroom allocation of lwtstate 

Tailroom is supposed to be of length sizeof(struct ila_lwt) but
sizeof(struct ila_params) is currently allocated.

This leads to the dst_cache and connected member of ila_lwt being
referenced out of bounds.

struct ila_lwt {
	struct ila_params p;
	struct dst_cache dst_cache;
	u32 connected : 1;
};

Fixes: 65d7ab8de5 ("net: Identifier Locator Addressing module")
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Graf 2016-10-19 23:16:39 +02:00 committed by David S. Miller
parent 7b1536ef0a
commit c5098ebbd6
1 changed files with 1 additions and 1 deletions
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2
net/ipv6/ila/ila_lwt.c
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@ -122,7 +122,7 @@ static int ila_build_state(struct net_device *dev, struct nlattr *nla,
struct ila_lwt *ilwt;
struct ila_params *p;
struct nlattr *tb[ILA_ATTR_MAX + 1];
size_t encap_len = sizeof(*p);
size_t encap_len = sizeof(*ilwt);
struct lwtunnel_state *newts;
const struct fib6_config *cfg6 = cfg;
struct ila_addr *iaddr;