dr_76: add boundary check

src/descriptors/dr_76.c

@@ -64,7 +64,9 @@ dvbpsi_content_id_dr_t *dvbpsi_DecodeContentIdDr(dvbpsi_descriptor_t *p_descript
         return NULL;
 
     p_decoded->i_number_of_entries = 0;
-    for (byte = 0; byte < p_descriptor->i_length; p_decoded->i_number_of_entries ++)
+    for (byte = 0;
+         (byte < p_descriptor->i_length) && (p_decoded->i_number_of_entries < DVBPSI_CRID_ENTRY_DR_MAX);
+         p_decoded->i_number_of_entries ++)
     {
         dvbpsi_crid_entry_t *entry = &p_decoded->p_entries[p_decoded->i_number_of_entries];
 

src/descriptors/dr_76.h

@@ -84,7 +84,14 @@ typedef struct dvbpsi_crid_entry_s
         uint8_t  path[253]; /*!< content path */
         uint16_t ref;       /*!< content reference */
     } value;                /*!< content specific value */
-}dvbpsi_crid_entry_t;
+} dvbpsi_crid_entry_t;
+
+/*!
+ * \def DVBPSI_CRID_ENTRY_DR_MAX
+ * \brief Maximum number of dvbpsi_crid_entry_t entries present in
+ * @see dvbpsi_content_id_dr_t
+ */
+#define DVBPSI_CRID_ENTRY_DR_MAX 85
 
 /*****************************************************************************
  * dvbpsi_content_id_dr_s
@@ -102,8 +109,8 @@ typedef struct dvbpsi_crid_entry_s
 typedef struct dvbpsi_content_id_dr_s
 {
     uint8_t i_number_of_entries;      /*!< Number of CRID entries present. */
-    dvbpsi_crid_entry_t p_entries[85];/*!< Array of CRID entries. */
-}dvbpsi_content_id_dr_t;
+    dvbpsi_crid_entry_t p_entries[DVBPSI_CRID_ENTRY_DR_MAX];/*!< Array of CRID entries. */
+} dvbpsi_content_id_dr_t;
 
 /*****************************************************************************
  * dvbpsi_DecodeLCNDr