From 7c600e3ebcb0eda0447850972c858f0d6e76aeba Mon Sep 17 00:00:00 2001
From: Guido Vranken <guidovranken@gmail.com>
Date: Sun, 20 Jun 2021 22:29:20 +0200
Subject: [PATCH] In wc_ecc_verify_hash_ex, return if ALLOC_CURVE_SPECS() fails

This prevents a NULL pointer dereference later in the function.
---
 wolfcrypt/src/ecc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/wolfcrypt/src/ecc.c b/wolfcrypt/src/ecc.c
index 7f34a6d95..9a768fc48 100644
--- a/wolfcrypt/src/ecc.c
+++ b/wolfcrypt/src/ecc.c
@@ -7108,6 +7108,9 @@ int wc_ecc_verify_hash_ex(mp_int *r, mp_int *s, const byte* hash,
 
 #if !defined(WOLFSSL_SP_MATH) || defined(FREESCALE_LTC_ECC)
    ALLOC_CURVE_SPECS(ECC_CURVE_FIELD_COUNT, err);
+   if (err != 0) {
+      return err;
+   }
 
 #if defined(WOLFSSL_ASYNC_CRYPT) && defined(HAVE_CAVIUM_V)
    err = wc_ecc_alloc_mpint(key, &key->e);