From 8a5e7b6e844ee7f41ca7df0105d4d052b2a36507 Mon Sep 17 00:00:00 2001
From: Steven Bellock <sbellock@nvidia.com>
Date: Tue, 30 Dec 2025 08:31:36 -0800
Subject: [PATCH] Return encapsulated Unspecified error

Fix #3455.

Signed-off-by: Steven Bellock <sbellock@nvidia.com>
---
 library/spdm_requester_lib/libspdm_req_encap_challenge_auth.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/library/spdm_requester_lib/libspdm_req_encap_challenge_auth.c b/library/spdm_requester_lib/libspdm_req_encap_challenge_auth.c
index 0337a698ec8..e8dc0174dab 100644
--- a/library/spdm_requester_lib/libspdm_req_encap_challenge_auth.c
+++ b/library/spdm_requester_lib/libspdm_req_encap_challenge_auth.c
@@ -158,7 +158,9 @@ libspdm_return_t libspdm_get_encap_response_challenge_auth(
     ptr += hash_size;
 
     if (!libspdm_get_random_number(SPDM_NONCE_SIZE, ptr)) {
-        return LIBSPDM_STATUS_LOW_ENTROPY;
+        return libspdm_generate_encap_error_response(
+            context, SPDM_ERROR_CODE_UNSPECIFIED, 0,
+            response_size, response);
     }
     ptr += SPDM_NONCE_SIZE;