# CVE-2023-39368: microcode_ctl: The microcode_ctl packages provide microcode updates for Intel and AMD processors.  Security Fix(es):  * kernel: loca...

CVE-2023-39368 is fixed in 2 products on 1 platform, first by ALAS2023-2024-559, released March 13, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-39368
- Priority: Routine
- CVSS: 6.5 (Moderate)
- EPSS: 0.0076
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 11, 2024

## Description

The microcode_ctl packages provide microcode updates for Intel and AMD processors.  Security Fix(es):  * kernel: local privilege escalation on Intel microcode on Intel(R) Xeon(R) (CVE-2023-22655)  * kernel: Local information disclosure on Intel(R) Atom(R) processors (CVE-2023-28746)  * kernel: Local information disclosure in some Intel(R) processors (CVE-2023-38575)  * kernel: Possible Denial of Service on Intel(R) Processors (CVE-2023-39368)  * kernel: Local information disclosure on Intel(R) Xeon(R) D processors with Intel(R) SGX due to incorrect calculation in microcode (CVE-2023-43490)  * intel-microcode: Race conditions in some Intel(R) Processors (CVE-2023-45733)  * intel-microcode: Unexpected behavior in Intel(R) Core(TM) Ultra Processors (CVE-2023-46103)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.  Additional Changes:  For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.5 Release Notes linked from the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | intel-microcode Debian 12.15 (bookworm) | 3.20240312.1~deb12u1 | [DEBIAN-CVE-2023-39368](https://patchblox.com/security/data/fix/linux/debian-cve-2023-39368.md) | Mar 14, 2024 |
| Linux | intel-microcode Debian 13.5 (trixie) | 3.20240312.1 | [DEBIAN-CVE-2023-39368](https://patchblox.com/security/data/fix/linux/debian-cve-2023-39368.md) | Mar 14, 2024 |
| Linux | intel-microcode Debian 14 | 3.20240312.1 | [DEBIAN-CVE-2023-39368](https://patchblox.com/security/data/fix/linux/debian-cve-2023-39368.md) | Mar 14, 2024 |
| Linux | intel-microcode Ubuntu 18.04.6 LTS (bionic) | 3.20240514.0ubuntu0.18.04.1+esm1 | [intel-microcode 3.20240514.0ubuntu0.18.04.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-intel-microcode-3.20240514.0ubuntu0.18.04.1-esm1.md) | May 16, 2024 |
| Linux | intel-microcode Ubuntu 20.04 LTS (focal) | 3.20240514.0ubuntu0.20.04.1 | [intel-microcode 3.20240514.0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-intel-microcode-3.20240514.0ubuntu0.20.04.1.md) | May 16, 2024 |
| Linux | intel-microcode Ubuntu 22.04.1 LTS (jammy) | 3.20240514.0ubuntu0.22.04.1 | [intel-microcode 3.20240514.0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-intel-microcode-3.20240514.0ubuntu0.22.04.1.md) | May 16, 2024 |
| Linux | microcode_ctl RHEL 9 | 4:20240910-1.el9_5 | [RHSA-2024:9401](https://patchblox.com/security/data/fix/linux/rhsa-2024-9401.md) | Nov 12, 2024 |
| Linux | microcode_ctl almalinux 9 | 4:20240910-1.el9_5 | [ALSA-2024:9401](https://patchblox.com/security/data/fix/linux/alsa-2024-9401.md) | Nov 12, 2024 |
| Linux | microcode_ctl amzn 2023 | 2:2.1-53.amzn2023.0.5 | [ALAS2023-2024-559](https://patchblox.com/security/data/fix/linux/alas2023-2024-559.md) | Mar 13, 2024 |
| Linux | microcode_ctl ol 9 | 4:20240910-1.0.1.el9_5 | [ELSA-2024-9401](https://patchblox.com/security/data/fix/linux/elsa-2024-9401.md) | Nov 14, 2024 |
| Linux | microcode_ctl rocky 9 | 4:20240910-1.el9_5 | [RLSA-2024:9401](https://patchblox.com/security/data/fix/linux/rlsa-2024-9401.md) | Mar 17, 2025 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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