From: Dmitry Belyavskiy <beldmit@gmail.com>
Date: Sun, 10 May 2020 14:15:00 +0000 (+0300)
Subject: Coverity issue #300971
X-Git-Tag: v3.0.0~123
X-Git-Url: http://www.wagner.pp.ru/gitweb/?p=openssl-gost%2Fengine.git;a=commitdiff_plain;h=4d1280e1054ce758d19be71f785ec3aff8573b4c

Coverity issue #300971
---

diff --git a/gost_crypt.c b/gost_crypt.c
index ffb577d..6d265a6 100644
--- a/gost_crypt.c
+++ b/gost_crypt.c
@@ -866,6 +866,9 @@ static int magma_cipher_do_ctr_acpkm_omac(EVP_CIPHER_CTX *ctx, unsigned char *ou
 	if (in == NULL && inl == 0) /* Final call */
 		return gost2015_final_call(ctx, c->omac_ctx, MAGMA_MAC_MAX_SIZE, c->tag, magma_cipher_do_ctr);
 
+  if (in == NULL)
+      return -1;
+
 	/* As in and out can be the same pointer, process unencrypted here */
 	if (EVP_CIPHER_CTX_encrypting(ctx))
 		EVP_DigestSignUpdate(c->omac_ctx, in, inl);