mmap_cache: Use stricter check for hash keys.

ht_size is size of hash_table in bytes, but hash keys have type uint32_t

1 files changed, 6 insertions, 4 deletions

diff --git a/src/responder/nss/nsssrv_mmap_cache.c b/src/responder/nss/nsssrv_mmap_cache.c
index 66afe6fdf..84570ac20 100644
--- a/src/responder/nss/nsssrv_mmap_cache.c
+++ b/src/responder/nss/nsssrv_mmap_cache.c
@@ -177,7 +177,7 @@ static void sss_mc_add_rec_to_chain(struct sss_mc_ctx *mcc,
     struct sss_mc_rec *cur;
     uint32_t slot;
 
-    if (hash > mcc->ht_size) {
+    if (hash > MC_HT_ELEMS(mcc->ht_size)) {
         /* Invalid hash. This should never happen, but better
          * return than trying to access out of bounds memory */
         return;
@@ -234,9 +234,11 @@ static void sss_mc_rm_rec_from_chain(struct sss_mc_ctx *mcc,
     struct sss_mc_rec *cur = NULL;
     uint32_t slot;
 
-    if (hash > mcc->ht_size) {
-        /* Invalid hash. This should never happen, but better
-         * return than trying to access out of bounds memory */
+    if (hash > MC_HT_ELEMS(mcc->ht_size)) {
+        /* It can happen if rec->hash1 and rec->hash2 was the same.
+         * or it is invalid hash. It is better to return
+         * than trying to access out of bounds memory
+         */
         return;
     }