From 07a8d75b5ae234230be00fa0617d05fd80787b7a Mon Sep 17 00:00:00 2001
From: tb <>
Date: Wed, 10 Aug 2022 12:06:28 +0000
Subject: Cast int64_t to uint64_t for negating

Avoid signed integer overflow by casting an int64_t to uint64_t before
negating. Same fix was applied in a_int.c -r1.44, but was forgotten to
be applied to a_enum.c.

ok jsing
---
 src/lib/libcrypto/asn1/a_enum.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

(limited to 'src')

diff --git a/src/lib/libcrypto/asn1/a_enum.c b/src/lib/libcrypto/asn1/a_enum.c
index 3b6cd9f954..b0b851028a 100644
--- a/src/lib/libcrypto/asn1/a_enum.c
+++ b/src/lib/libcrypto/asn1/a_enum.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: a_enum.c,v 1.25 2022/07/09 14:46:43 tb Exp $ */
+/* $OpenBSD: a_enum.c,v 1.26 2022/08/10 12:06:28 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -126,14 +126,18 @@ ASN1_ENUMERATED_get_int64(int64_t *out_val, const ASN1_ENUMERATED *aenum)
 int
 ASN1_ENUMERATED_set_int64(ASN1_ENUMERATED *aenum, int64_t val)
 {
+	uint64_t uval;
+
 	asn1_aenum_clear(aenum);
 
+	uval = (uint64_t)val;
+
 	if (val < 0) {
 		aenum->type = V_ASN1_NEG_ENUMERATED;
-		val = -val;
+		uval = -uval;
 	}
 
-	return asn1_aint_set_uint64((uint64_t)val, &aenum->data, &aenum->length);
+	return asn1_aint_set_uint64(uval, &aenum->data, &aenum->length);
 }
 
 long
-- 
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