From 206da660a37e84b7266db4e2c4e9485cdafb1366 Mon Sep 17 00:00:00 2001
From: Pauli <paul.dale@oracle.com>
Date: Mon, 27 Apr 2020 09:28:55 +1000
Subject: [PATCH] coverity 1462580 Improper use of negative value
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11651)
---
crypto/hmac/hmac.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/crypto/hmac/hmac.c b/crypto/hmac/hmac.c
index b49baec4c1..6c1a70e4bd 100644
--- a/crypto/hmac/hmac.c
+++ b/crypto/hmac/hmac.c
@@ -55,6 +55,8 @@ int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len,
j = EVP_MD_block_size(md);
if (!ossl_assert(j <= (int)sizeof(keytmp)))
return 0;
+ if (j < 0)
+ return 0;
if (j < len) {
if (!EVP_DigestInit_ex(ctx->md_ctx, md, impl)
|| !EVP_DigestUpdate(ctx->md_ctx, key, len)