diff options
| -rw-r--r-- | net/mpls/af_mpls.c | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c index 7f891ffffc05..5fe274c47c41 100644 --- a/net/mpls/af_mpls.c +++ b/net/mpls/af_mpls.c @@ -2031,6 +2031,40 @@ nla_put_failure: return -EMSGSIZE; } +#if IS_ENABLED(CONFIG_INET) +static int mpls_valid_fib_dump_req(const struct nlmsghdr *nlh, + struct netlink_ext_ack *extack) +{ + return ip_valid_fib_dump_req(nlh, extack); +} +#else +static int mpls_valid_fib_dump_req(const struct nlmsghdr *nlh, + struct netlink_ext_ack *extack) +{ + struct rtmsg *rtm; + + if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*rtm))) { + NL_SET_ERR_MSG_MOD(extack, "Invalid header for FIB dump request"); + return -EINVAL; + } + + rtm = nlmsg_data(nlh); + if (rtm->rtm_dst_len || rtm->rtm_src_len || rtm->rtm_tos || + rtm->rtm_table || rtm->rtm_protocol || rtm->rtm_scope || + rtm->rtm_type || rtm->rtm_flags) { + NL_SET_ERR_MSG_MOD(extack, "Invalid values in header for FIB dump request"); + return -EINVAL; + } + + if (nlmsg_attrlen(nlh, sizeof(*rtm))) { + NL_SET_ERR_MSG_MOD(extack, "Invalid data after header in FIB dump request"); + return -EINVAL; + } + + return 0; +} +#endif + static int mpls_dump_routes(struct sk_buff *skb, struct netlink_callback *cb) { const struct nlmsghdr *nlh = cb->nlh; @@ -2042,7 +2076,7 @@ static int mpls_dump_routes(struct sk_buff *skb, struct netlink_callback *cb) ASSERT_RTNL(); if (cb->strict_check) { - int err = ip_valid_fib_dump_req(nlh, cb->extack); + int err = mpls_valid_fib_dump_req(nlh, cb->extack); if (err < 0) return err; |