Taken from https://git.zx2c4.com/WireGuard/commit/src?id=3120425f69003be287cb2d308f89c7a6a0335ff0 Reported-by: Bruno Wolff III <bruno@xxxxxxxx> --- drivers/net/wireguard/netlink.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) diff --git a/drivers/net/wireguard/netlink.c b/drivers/net/wireguard/netlink.c index 3763e8c14ea5..676d36725120 100644 --- a/drivers/net/wireguard/netlink.c +++ b/drivers/net/wireguard/netlink.c @@ -21,8 +21,8 @@ static struct genl_family genl_family; static const struct nla_policy device_policy[WGDEVICE_A_MAX + 1] = { [WGDEVICE_A_IFINDEX] = { .type = NLA_U32 }, [WGDEVICE_A_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ - 1 }, - [WGDEVICE_A_PRIVATE_KEY] = { .len = NOISE_PUBLIC_KEY_LEN }, - [WGDEVICE_A_PUBLIC_KEY] = { .len = NOISE_PUBLIC_KEY_LEN }, + [WGDEVICE_A_PRIVATE_KEY] = { .type = NLA_EXACT_LEN, .len = NOISE_PUBLIC_KEY_LEN }, + [WGDEVICE_A_PUBLIC_KEY] = { .type = NLA_EXACT_LEN, .len = NOISE_PUBLIC_KEY_LEN }, [WGDEVICE_A_FLAGS] = { .type = NLA_U32 }, [WGDEVICE_A_LISTEN_PORT] = { .type = NLA_U16 }, [WGDEVICE_A_FWMARK] = { .type = NLA_U32 }, @@ -30,12 +30,12 @@ static const struct nla_policy device_policy[WGDEVICE_A_MAX + 1] = { }; static const struct nla_policy peer_policy[WGPEER_A_MAX + 1] = { - [WGPEER_A_PUBLIC_KEY] = { .len = NOISE_PUBLIC_KEY_LEN }, - [WGPEER_A_PRESHARED_KEY] = { .len = NOISE_SYMMETRIC_KEY_LEN }, + [WGPEER_A_PUBLIC_KEY] = { .type = NLA_EXACT_LEN, .len = NOISE_PUBLIC_KEY_LEN }, + [WGPEER_A_PRESHARED_KEY] = { .type = NLA_EXACT_LEN, .len = NOISE_SYMMETRIC_KEY_LEN }, [WGPEER_A_FLAGS] = { .type = NLA_U32 }, - [WGPEER_A_ENDPOINT] = { .len = sizeof(struct sockaddr) }, + [WGPEER_A_ENDPOINT] = { .type = NLA_MIN_LEN, .len = sizeof(struct sockaddr) }, [WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL] = { .type = NLA_U16 }, - [WGPEER_A_LAST_HANDSHAKE_TIME] = { .len = sizeof(struct __kernel_timespec) }, + [WGPEER_A_LAST_HANDSHAKE_TIME] = { .type = NLA_EXACT_LEN, .len = sizeof(struct __kernel_timespec) }, [WGPEER_A_RX_BYTES] = { .type = NLA_U64 }, [WGPEER_A_TX_BYTES] = { .type = NLA_U64 }, [WGPEER_A_ALLOWEDIPS] = { .type = NLA_NESTED }, @@ -44,7 +44,7 @@ static const struct nla_policy peer_policy[WGPEER_A_MAX + 1] = { static const struct nla_policy allowedip_policy[WGALLOWEDIP_A_MAX + 1] = { [WGALLOWEDIP_A_FAMILY] = { .type = NLA_U16 }, - [WGALLOWEDIP_A_IPADDR] = { .len = sizeof(struct in_addr) }, + [WGALLOWEDIP_A_IPADDR] = { .type = NLA_MIN_LEN, .len = sizeof(struct in_addr) }, [WGALLOWEDIP_A_CIDR_MASK] = { .type = NLA_U8 } }; @@ -591,12 +591,10 @@ static const struct genl_ops genl_ops[] = { .start = wg_get_device_start, .dumpit = wg_get_device_dump, .done = wg_get_device_done, - .policy = device_policy, .flags = GENL_UNS_ADMIN_PERM }, { .cmd = WG_CMD_SET_DEVICE, .doit = wg_set_device, - .policy = device_policy, .flags = GENL_UNS_ADMIN_PERM } }; @@ -608,6 +606,7 @@ static struct genl_family genl_family __ro_after_init = { .version = WG_GENL_VERSION, .maxattr = WGDEVICE_A_MAX, .module = THIS_MODULE, + .policy = device_policy, .netnsok = true }; -- 2.20.1
