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-rw-r--r--net/mpls/af_mpls.c36
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;