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-rw-r--r--src/responder/nss/nsssrv_mmap_cache.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/src/responder/nss/nsssrv_mmap_cache.c b/src/responder/nss/nsssrv_mmap_cache.c
index e312be19a..2958bbacc 100644
--- a/src/responder/nss/nsssrv_mmap_cache.c
+++ b/src/responder/nss/nsssrv_mmap_cache.c
@@ -106,6 +106,12 @@ 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) {
+ /* Invalid hash. This should never happen, but better
+ * return than trying to access out of bounds memory */
+ return;
+ }
+
slot = mcc->hash_table[hash];
if (slot == MC_INVALID_VAL) {
/* no previous record/collision, just add to hash table */
@@ -136,6 +142,12 @@ 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 */
+ return;
+ }
+
slot = mcc->hash_table[hash];
cur = MC_SLOT_TO_PTR(mcc->data_table, slot, struct sss_mc_rec);
if (cur == rec) {