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: 65d7ab8de582 ("net: Identifier Locator Addressing module")
Signed-off-by: Thomas Graf <[email protected]>
Acked-by: Daniel Borkmann <[email protected]>
---
-stable candidate
net/ipv6/ila/ila_lwt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv6/ila/ila_lwt.c b/net/ipv6/ila/ila_lwt.c
index 9fafba6..c7a39d0 100644
--- a/net/ipv6/ila/ila_lwt.c
+++ b/net/ipv6/ila/ila_lwt.c
@@ -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;
--
2.7.4
