From 390960c947ee7ddb2f323ef80f1ae93ea206c861 Mon Sep 17 00:00:00 2001
From: Christopher Puschmann <cp@lumen.sh>
Date: Fri, 15 Sep 2023 15:36:09 +0200
Subject: [PATCH] Limit maximum BER packet length in `FuzzParseDN` to 65536
 bytes

Parallel and large amount of fuzzing data can create large amounts of allocated data and cause restricted fuzzing environments to crash (see #460)
---
 fuzz_test.go | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/fuzz_test.go b/fuzz_test.go
index eeee720..fcbd87d 100644
--- a/fuzz_test.go
+++ b/fuzz_test.go
@@ -3,9 +3,15 @@
 
 package ldap
 
-import "testing"
+import (
+	ber "github.com/go-asn1-ber/asn1-ber"
+	"testing"
+)
 
 func FuzzParseDN(f *testing.F) {
+	// See https://github.com/go-asn1-ber/asn1-ber/blob/04301b4b1c5ff66221f8f8a394f814a9917d678a/fuzz_test.go#L33-L37
+	// for why this limitation is necessary
+	ber.MaxPacketLengthBytes = 65536
 
 	f.Add("*")
 	f.Add("cn=Jim\\0Test")