enforce DS hash exists

diff --git a/lib/dns/rdata/generic/ds_43.c b/lib/dns/rdata/generic/ds_43.c
index c36ea3a3b2f956e7c3ae6f70a3acad406af06949..8312351b268f319f2dd29efdfc2f820917c1100d 100644 (file)
--- a/lib/dns/rdata/generic/ds_43.c
+++ b/lib/dns/rdata/generic/ds_43.c
@@ -166,7 +166,7 @@ generic_fromwire_ds(ARGS_FROMWIRE) {
        /*
         * Check digest lengths if we know them.
         */
-       if (sr.length < 4 ||
+       if (sr.length < 5 ||
            (sr.base[3] == DNS_DSDIGEST_SHA1 &&
             sr.length < 4 + ISC_SHA1_DIGESTLENGTH) ||
            (sr.base[3] == DNS_DSDIGEST_SHA256 &&