diff --git a/crypto/asn1/asn1_par.c b/crypto/asn1/asn1_par.c
index aff3e2b..e04aa1e 100644
--- a/crypto/asn1/asn1_par.c
+++ b/crypto/asn1/asn1_par.c
@@ -61,6 +61,8 @@
 #include <openssl/mem.h>
 
 
+#define ASN1_PARSE_MAXDEPTH 128
+
 static int asn1_print_info(BIO *bp, int tag, int xclass,int constructed,
 	int indent);
 static int asn1_parse2(BIO *bp, const unsigned char **pp, long length,
@@ -125,6 +127,13 @@
 #else
 	dump_indent = 6;	/* Because we know BIO_dump_indent() */
 #endif
+
+	if (depth > ASN1_PARSE_MAXDEPTH)
+		{
+		BIO_puts(bp, "BAD RECURSION DEPTH\n");
+		return 0;
+		}
+
 	p= *pp;
 	tot=p+length;
 	op=p-1;