X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/bba74fc65f77dc6678b3d33eef0acf43efe8f653..4263f395efd136dece52d765dfcff3c96f17506e:/src/src/dkim.c

diff --git a/src/src/dkim.c b/src/src/dkim.c
index 87e91dea2..05b5fec56 100644
--- a/src/src/dkim.c
+++ b/src/src/dkim.c
@@ -42,6 +42,9 @@ int dkim_exim_query_dns_txt(char *name, char *answer) {
                "%.*s", (int)len, (char *)((rr->data)+rr_offset));
       rr_offset+=len;
       answer_offset+=len;
+      if (answer_offset >= PDKIM_DNS_TXT_MAX_RECLEN) {
+        return PDKIM_FAIL;
+      }
     }
   }
   else return PDKIM_FAIL;