$NetBSD: patch-CVE-2014-8138,v 1.1 2015/03/11 20:58:26 spz Exp $

--- jasper/src/libjasper/jp2/jp2_dec.c.orig	2012-08-08 08:01:36.000000000 +0000
+++ jasper/src/libjasper/jp2/jp2_dec.c
@@ -444,6 +447,11 @@ jas_image_t *jp2_decode(jas_stream_t *in
 	/* Determine the type of each component. */
 	if (dec->cdef) {
 		for (i = 0; i < dec->numchans; ++i) {
+			/* Is the channel number reasonable? */
+			if (dec->cdef->data.cdef.ents[i].channo >= dec->numchans) {
+				jas_eprintf("error: invalid channel number in CDEF box\n");
+				goto error;
+			}
 			jas_image_setcmpttype(dec->image,
 			  dec->chantocmptlut[dec->cdef->data.cdef.ents[i].channo],
 			  jp2_getct(jas_image_clrspc(dec->image),