Index: audio/libsndfile/Makefile
===================================================================
--- audio/libsndfile/Makefile
+++ audio/libsndfile/Makefile
@@ -3,6 +3,7 @@
 
 PORTNAME=	libsndfile
 PORTVERSION=	1.0.28
+PORTREVISION=	1
 CATEGORIES=	audio
 MASTER_SITES=	http://www.mega-nerd.com/libsndfile/files/
 
@@ -10,6 +11,7 @@
 COMMENT=	Reading and writing files containing sampled sound (like WAV or AIFF)
 
 LICENSE=	LGPL21
+LICENSE_FILE=	${WRKSRC}/COPYING
 
 USES=		cpe gmake libtool localbase pkgconfig
 CPE_VENDOR=	${CPE_PRODUCT}_project
Index: audio/libsndfile/files/patch-src_aiff.c
===================================================================
--- /dev/null
+++ audio/libsndfile/files/patch-src_aiff.c
@@ -0,0 +1,19 @@
+From f833c53cb596e9e1792949f762e0b33661822748 Mon Sep 17 00:00:00 2001
+From: Erik de Castro Lopo <erikd@mega-nerd.com>
+Date: Tue, 23 May 2017 20:15:24 +1000
+Subject: [PATCH] src/aiff.c: Fix a buffer read overflow
+
+Secunia Advisory SA76717.
+
+Found by: Laurent Delosieres, Secunia Research at Flexera Software
+--- src/aiff.c.orig	2017-04-01 07:18:02 UTC
++++ src/aiff.c
+@@ -1905,7 +1905,7 @@ aiff_read_chanmap (SF_PRIVATE * psf, unsigned dword)
+ 		psf_binheader_readf (psf, "j", dword - bytesread) ;
+ 
+ 	if (map_info->channel_map != NULL)
+-	{	size_t chanmap_size = psf->sf.channels * sizeof (psf->channel_map [0]) ;
++	{	size_t chanmap_size = SF_MIN (psf->sf.channels, layout_tag & 0xffff) * sizeof (psf->channel_map [0]) ;
+ 
+ 		free (psf->channel_map) ;
+