From: Alan T. DeKok <aland@freeradius.org>
Date: Mon, 28 Nov 2016 15:37:17 +0000 (-0500)
Subject: limit FD to FD_SETSIZE
X-Git-Tag: release_3_0_13~97
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c6ff6e71d51b69aafd69cc8a7f9c5ed8d19beefb;p=thirdparty%2Ffreeradius-server.git

limit FD to FD_SETSIZE
---

diff --git a/src/lib/event.c b/src/lib/event.c
index fa1e0aa0daf..ba9e60cf1a6 100644
--- a/src/lib/event.c
+++ b/src/lib/event.c
@@ -402,6 +402,14 @@ int fr_event_fd_insert(fr_event_list_t *el, int type, int fd,
 
 #else  /* HAVE_KQUEUE */
 
+	/*
+	 *	select() has limits.
+	 */
+	if (fd > FD_SETSIZE) {
+		fprintf(stderr, "FD is larger than FD_SETSIZE");
+		return 0;
+	}
+
 	for (i = 0; i <= el->max_readers; i++) {
 		/*
 		 *	Be fail-safe on multiple inserts.