From: Mark Andrews <marka@isc.org>
Date: Tue, 17 Mar 2020 02:56:30 +0000 (+1100)
Subject: address off by one error in idn_output_filter
X-Git-Tag: v9.17.1~41^2
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=af67acc0d076fa4f767644a71c9cd9ad9bc56b89;p=thirdparty%2Fbind9.git

address off by one error in idn_output_filter
---

diff --git a/bin/dig/dighost.c b/bin/dig/dighost.c
index 33841914714..85e725c030a 100644
--- a/bin/dig/dighost.c
+++ b/bin/dig/dighost.c
@@ -4420,7 +4420,7 @@ idn_output_filter(isc_buffer_t *buffer, unsigned int used_org) {
 	 * Copy name from 'buffer' to 'src' and terminate it with NULL.
 	 */
 	srclen = isc_buffer_usedlength(buffer) - used_org;
-	if (srclen > sizeof(src)) {
+	if (srclen >= sizeof(src)) {
 		warn("Input name too long to perform IDN conversion");
 		return (ISC_R_SUCCESS);
 	}