prevent an infinite loop when the ip->ipNetToMediaEntrySize is 0

postwait · Mar 22, 2014 · f20ac59 · f20ac59
1 parent 1f07cc5
commit f20ac59
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/arpcache-dlpi.cc b/arpcache-dlpi.cc
@@ -128,6 +128,7 @@ int sample_arp_cache(arp_entry **l) {
       for(np = (mib2_ipNetToMediaEntry_t *)dbuf;
           (char *)np < (char *)dbuf + databuf.len;
           np = (mib2_ipNetToMediaEntry_t *)((char *)np + ip->ipNetToMediaEntrySize)) {
+        if(ip->ipNetToMediaEntrySize == 0) break;
         if(count >= arpcache_psize) {
           arpcache_psize <<= 1;
           arpcache_private = (arp_entry *)realloc(arpcache_private, sizeof(arp_entry)*(arpcache_psize+1));