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From: Andriy Voskoboinyk <avos@FreeBSD.org>
Date: Mon, 16 Oct 2017 07:15:50 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r324658 - head/usr.sbin/wlandebug
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Author: avos
Date: Mon Oct 16 07:15:50 2017
New Revision: 324658
URL: https://svnweb.freebsd.org/changeset/base/324658

Log:
  wlandebug(8): add a sanity check.

Modified:
  head/usr.sbin/wlandebug/wlandebug.c

Modified: head/usr.sbin/wlandebug/wlandebug.c
==============================================================================
--- head/usr.sbin/wlandebug/wlandebug.c	Mon Oct 16 07:01:27 2017	(r324657)
+++ head/usr.sbin/wlandebug/wlandebug.c	Mon Oct 16 07:15:50 2017	(r324658)
@@ -172,6 +172,9 @@ get_orig_iface_name(char *oid, size_t oid_size, char *
 	if (ifconfig_get_orig_name(h, name, &orig_name) < 0)
 		errc(1, ifconfig_err_errno(h), "cannot get interface name");
 
+	if (strlen(orig_name) < strlen("wlan") + 1)
+		errx(1, "expecting a wlan interface name");
+
 	ifconfig_close(h);
 	setoid(oid, oid_size, orig_name);
 	free(orig_name);