diff --git a/microcode_ctl-2.1-41.tar.xz b/microcode_ctl-2.1-42.tar.xz
similarity index 52%
rename from microcode_ctl-2.1-41.tar.xz
rename to microcode_ctl-2.1-42.tar.xz
index 9102b0208eec353266f841efd1e41e1c915d1e87..72ed5822d3e03248023782f57e59ea9f8476c6fc 100644
Binary files a/microcode_ctl-2.1-41.tar.xz and b/microcode_ctl-2.1-42.tar.xz differ
diff --git a/microcode_ctl.spec b/microcode_ctl.spec
index 866c99d0877ebfcacc96d4c8fac957b066e01402..5958095c4e54e1fb43ac73d429088e6b49792ed9 100644
--- a/microcode_ctl.spec
+++ b/microcode_ctl.spec
@@ -1,10 +1,10 @@
 %global debug_package %{nil}
-%define upstream_version 2.1-41
+%define upstream_version 2.1-42
 
 Name:           microcode_ctl
 Summary:        Microcode update for CPU
 Version:        2.1
-Release:        41
+Release:        42
 License:        GPLv2+ and Redistributable, no modification permitted
 URL:            https://pagure.io/microcode_ctl
 ExclusiveArch:  %{ix86} x86_64
@@ -27,6 +27,10 @@ make DESTDIR=%{buildroot} PREFIX=%{_prefix} INSDIR=/usr/sbin install clean
 %doc /usr/share/doc/microcode_ctl/*
 
 %changelog
+* Wed Nov 15 2023 lwg K <weigangli99@gmail.com> - 2.1-42
+- update to upstream 2.1-42. 20231114
+- fix CVE-2023-23583
+
 * Wed Aug 23 2023 yaoxin <yao_xin001@hoperun.com> - 2.1-41
 - Update to 2.1-41 for fix CVE-2022-40982,CVE-2022-38090 and CVE-2022-33196