auth: fix out of bounds exception in CAA processing, fixes #6089

diff --git a/pdns/dnsparser.cc b/pdns/dnsparser.cc
index 52fca0ef132482be7462fb2572c6edb7a2fbb28b..126432f12c638b0ed3ca94f18ea2fa0eb6d12cad 100644 (file)
--- a/pdns/dnsparser.cc
+++ b/pdns/dnsparser.cc
@@ -491,7 +491,7 @@ string PacketReader::getText(bool multi, bool lenField)
 
 string PacketReader::getUnquotedText(bool lenField)
 {
-  int16_t stop_at;
+  uint16_t stop_at;
   if(lenField)
     stop_at = (uint8_t)d_content.at(d_pos) + d_pos + 1;
   else