From 82c2915a4ef786e8c35c893eeb49a303ae7ee490 Mon Sep 17 00:00:00 2001
From: inoguchi <>
Date: Sat, 22 Jan 2022 00:36:46 +0000
Subject: X509_GET_PUBKEY(3) return value check in libcrypto

CID 345116

ok beck@ tb@
---
 src/lib/libcrypto/x509/x509_vfy.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'src/lib')

diff --git a/src/lib/libcrypto/x509/x509_vfy.c b/src/lib/libcrypto/x509/x509_vfy.c
index cf92c10299..9a929963f3 100644
--- a/src/lib/libcrypto/x509/x509_vfy.c
+++ b/src/lib/libcrypto/x509/x509_vfy.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: x509_vfy.c,v 1.100 2021/11/26 13:17:09 schwarze Exp $ */
+/* $OpenBSD: x509_vfy.c,v 1.101 2022/01/22 00:36:46 inoguchi Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -2096,7 +2096,8 @@ X509_get_pubkey_parameters(EVP_PKEY *pkey, STACK_OF(X509) *chain)
 
 	/* first, populate the other certs */
 	for (j = i - 1; j >= 0; j--) {
-		ktmp2 = X509_get0_pubkey(sk_X509_value(chain, j));
+		if ((ktmp2 = X509_get0_pubkey(sk_X509_value(chain, j))) == NULL)
+			return 0;
 		if (!EVP_PKEY_copy_parameters(ktmp2, ktmp))
 			return 0;
 	}
-- 
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