$NetBSD: patch-aa,v 1.15.2.2 2009/06/08 21:05:22 spz Exp $

Upstream fix for DoS vulnerability taken from here:

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=530831

--- src/alaw.c.orig	2009-03-22 19:17:13.000000000 +0000
+++ src/alaw.c	2009-06-08 10:03:02.000000000 +0100
@@ -69,7 +69,7 @@
 	else
 		psf->datalength = 0 ;
 
-	psf->sf.frames = psf->datalength / psf->blockwidth ;
+	psf->sf.frames = psf->blockwidth > 0 ? psf->datalength / psf->blockwidth : 0 ;
 
 	return 0 ;
 } /* alaw_init */
