Description: Fix for CVE-2011-4516 and CVE-2011-4517
 This patch fixes a possible denial of service and code execution via
 heap-based buffer overflows.
Author: Michael Gilbert <michael.s.gilbert@gmail.com>
Origin: Patch thanks to Red Hat

Index: jasper-1.900.1/src/libjasper/jpc/jpc_cs.c
===================================================================
--- jasper-1.900.1.orig/src/libjasper/jpc/jpc_cs.c	2011-12-19 09:35:34.186909298 -0500
+++ jasper-1.900.1/src/libjasper/jpc/jpc_cs.c	2011-12-19 09:35:51.198909832 -0500
@@ -744,6 +744,10 @@
 		return -1;
 	}
 	compparms->numrlvls = compparms->numdlvls + 1;
+	if (compparms->numrlvls > JPC_MAXRLVLS) {
+		jpc_cox_destroycompparms(compparms);
+		return -1;
+	}
 	if (prtflag) {
 		for (i = 0; i < compparms->numrlvls; ++i) {
 			if (jpc_getuint8(in, &tmp)) {
@@ -1331,7 +1335,7 @@
 	jpc_crgcomp_t *comp;
 	uint_fast16_t compno;
 	crg->numcomps = cstate->numcomps;
-	if (!(crg->comps = jas_alloc2(cstate->numcomps, sizeof(uint_fast16_t)))) {
+	if (!(crg->comps = jas_alloc2(cstate->numcomps, sizeof(jpc_crgcomp_t)))) {
 		return -1;
 	}
 	for (compno = 0, comp = crg->comps; compno < cstate->numcomps;