1 files changed, 14 insertions, 0 deletions

diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
index fb5d913f5815..23a968f754be 100644
--- a/net/ipv4/cipso_ipv4.c
+++ b/net/ipv4/cipso_ipv4.c
@@ -447,8 +447,22 @@ static struct cipso_v4_doi *cipso_v4_doi_search(u32 doi)
  */
 int cipso_v4_doi_add(struct cipso_v4_doi *doi_def)
 {
+        u32 iter;
+
         if (doi_def == NULL || doi_def->doi == CIPSO_V4_DOI_UNKNOWN)
                 return -EINVAL;
+        for (iter = 0; iter < CIPSO_V4_TAG_MAXCNT; iter++) {
+                switch (doi_def->tags[iter]) {
+                case CIPSO_V4_TAG_RBITMAP:
+                        break;
+                case CIPSO_V4_TAG_INVALID:
+                        if (iter == 0)
+                                return -EINVAL;
+                        break;
+                default:
+                        return -EINVAL;
+                }
+        }
 
         doi_def->valid = 1;
         INIT_RCU_HEAD(&doi_def->rcu);