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place a upper bound on rdcount

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This commit is contained in:
Mark Andrews 2014-06-04 13:16:42 +10:00
parent 38cf49d0ef
commit d2fbb50b98
1 changed files with 1 additions and 1 deletions
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2
lib/dns/master.c
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@ -2375,7 +2375,7 @@ load_raw(dns_loadctx_t *lctx) {
rdatalist.covers = isc_buffer_getuint16(&target);
rdatalist.ttl = isc_buffer_getuint32(&target);
rdcount = isc_buffer_getuint32(&target);
if (rdcount == 0) {
if (rdcount == 0 || rdcount > 0xffff) {
result = ISC_R_RANGE;
goto cleanup;
}