NLA_BINARY misuse bug in HSR
Removed .type field from NLA to do proper length checking.
Reported by Daniel Borkmann and Julia Lawall.
Signed-off-by: Peter Heise <peter.heise@airbus.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/hsr/hsr_netlink.c b/net/hsr/hsr_netlink.c
index 5425d87..d4d1617 100644
--- a/net/hsr/hsr_netlink.c
+++ b/net/hsr/hsr_netlink.c
@@ -24,7 +24,7 @@
[IFLA_HSR_SLAVE2] = { .type = NLA_U32 },
[IFLA_HSR_MULTICAST_SPEC] = { .type = NLA_U8 },
[IFLA_HSR_VERSION] = { .type = NLA_U8 },
- [IFLA_HSR_SUPERVISION_ADDR] = { .type = NLA_BINARY, .len = ETH_ALEN },
+ [IFLA_HSR_SUPERVISION_ADDR] = { .len = ETH_ALEN },
[IFLA_HSR_SEQ_NR] = { .type = NLA_U16 },
};
@@ -121,10 +121,9 @@
/* attribute policy */
-/* NLA_BINARY missing in libnl; use NLA_UNSPEC in userspace instead. */
static const struct nla_policy hsr_genl_policy[HSR_A_MAX + 1] = {
- [HSR_A_NODE_ADDR] = { .type = NLA_BINARY, .len = ETH_ALEN },
- [HSR_A_NODE_ADDR_B] = { .type = NLA_BINARY, .len = ETH_ALEN },
+ [HSR_A_NODE_ADDR] = { .len = ETH_ALEN },
+ [HSR_A_NODE_ADDR_B] = { .len = ETH_ALEN },
[HSR_A_IFINDEX] = { .type = NLA_U32 },
[HSR_A_IF1_AGE] = { .type = NLA_U32 },
[HSR_A_IF2_AGE] = { .type = NLA_U32 },