coverity 1462580 Improper use of negative value
authorPauli <paul.dale@oracle.com>
Sun, 26 Apr 2020 23:28:55 +0000 (09:28 +1000)
committerPauli <paul.dale@oracle.com>
Thu, 30 Apr 2020 10:21:33 +0000 (20:21 +1000)
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11651)

crypto/hmac/hmac.c

index b49baec..6c1a70e 100644 (file)
@@ -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)