vendor/bind9/9.9.6-P1

1 files changed, 5 insertions, 3 deletions

diff --git a/lib/dns/rcode.c b/lib/dns/rcode.c
index 69007f881efd..2fdb751e6dbf 100644
--- a/lib/dns/rcode.c
+++ b/lib/dns/rcode.c
@@ -212,11 +212,13 @@ maybe_numeric(unsigned int *valuep, isc_textregion_t *source,
 		return (ISC_R_BADNUMBER);
 
 	/*
-	 * We have a potential number.  Try to parse it with
-	 * isc_parse_uint32().  isc_parse_uint32() requires
+	 * We have a potential number.	Try to parse it with
+	 * isc_parse_uint32().	isc_parse_uint32() requires
 	 * null termination, so we must make a copy.
 	 */
-	strncpy(buffer, source->base, NUMBERSIZE);
+	strncpy(buffer, source->base, sizeof(buffer));
+	buffer[sizeof(buffer) - 1] = '\0';
+
 	INSIST(buffer[source->length] == '\0');
 
 	result = isc_parse_uint32(&n, buffer, 10);