components/sysutils/net-snmp/patches/029.7097655.ipAddressTable_container.patch

   1 #
   2 # netsnmp_access_ipaddress_container_load() can return NULL.
   3 # ipaddressTable_container_load() should check for the validity
   4 # of return value before accessing it or else it causes SEGV.
   5 #
   6 # Developed in-house. Bug submitted upstream
   7 # https://sourceforge.net/p/net-snmp/bugs/2589
   8 #
   9 --- net-snmp-5.9.4/agent/mibgroup/ip-mib/ipAddressTable/ipAddressTable_data_access.c.orig
  10 +++ net-snmp-5.9.4/agent/mibgroup/ip-mib/ipAddressTable/ipAddressTable_data_access.c
  11 @@ -370,6 +370,8 @@
  12       * missing addresses to be deleted. Also, prune interfaces in
  13       * ipaddress_container, so only the new interfaces remain.
  14       */
  15 +    if(ipaddress_container != NULL)
  16 +    {
  17      tmp_ptr[0] = ipaddress_container->next;
  18      tmp_ptr[1] = NULL; /* list of interfaces to be removed from 'container' */
  19      tmp_ptr[2] = NULL; /* list of interfaces to be ignored in ipaddress_container */
  20 @@ -434,6 +436,7 @@
  21          }
  22          CONTAINER_FREE(to_ignore);
  23      }
  24 +    }
  25
  26      DEBUGMSGT(("verbose:ipAddressTable:ipAddressTable_cache_load",
  27                 "%lu records\n", (unsigned long)CONTAINER_SIZE(container)));