# CVE-2025-35973: microcode_ctl: The microcode_ctl packages provide microcode updates for Intel and AMD processors. Security Fix(es): * kernel: hype... CVE-2025-35973 is fixed in 3 products on 1 platform, first by RHSA-2026:67979, released August 11, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2025-35973 - Priority: High - CVSS: 7.2 (Important) - EPSS: 0.0010 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Aug 11, 2026 ## Description The microcode_ctl packages provide microcode updates for Intel and AMD processors. Security Fix(es): * kernel: hypervisor: Intel Processors: Privilege escalation in Ring 0 via improper value handling (CVE-2025-35973) * kernel: microcode_ctl: Intel Xeon 6 Processors: Privilege escalation via improper memory range handling in SMM (CVE-2025-31936) Bug Fix(es) and Enhancement(s): * [RHEL 8] Update Intel CPU microcode to the latest version (JIRA:RHEL-240770) 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. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | intel-microcode Debian 14 | 3.20260925.1 | [DEBIAN-CVE-2025-35973](https://patchblox.com/security/data/fix/linux/debian-cve-2025-35973.md) | Aug 11, 2026 | | Linux | microcode_ctl RHEL 10 | 20260812-0.el10_2 | [RHSA-2026:67979](https://patchblox.com/security/data/fix/linux/rhsa-2026-67979.md) | Aug 11, 2026 | | Linux | microcode_ctl RHEL 8 | 4:20260812-1.el8_10 | [RHSA-2026:65147](https://patchblox.com/security/data/fix/linux/rhsa-2026-65147.md) | Sep 13, 2026 | | Linux | microcode_ctl RHEL 9 | 4:20260210-1.20260812.1.el9_8 | [RHSA-2026:68011](https://patchblox.com/security/data/fix/linux/rhsa-2026-68011.md) | Sep 19, 2026 | | Linux | microcode_ctl almalinux 10 | 4:20260812-0.el10_2 | [ALSA-2026:67979](https://patchblox.com/security/data/fix/linux/alsa-2026-67979.md) | Sep 16, 2026 | | Linux | microcode_ctl almalinux 8 | 4:20260812-1.el8_10 | [ALSA-2026:65147](https://patchblox.com/security/data/fix/linux/alsa-2026-65147.md) | Sep 8, 2026 | | Linux | microcode_ctl almalinux 9 | 4:20260210-1.20260812.1.el9_8 | [ALSA-2026:68011](https://patchblox.com/security/data/fix/linux/alsa-2026-68011.md) | Sep 16, 2026 | | Linux | microcode_ctl amzn 2023 | 2:2.1-53.amzn2023.0.16 | [ALAS2023-2026-2080](https://patchblox.com/security/data/fix/linux/alas2023-2026-2080.md) | Aug 31, 2026 | | Linux | microcode_ctl ol 10 | 4:20260812-1.0.2.el10_2 | [ELSA-2026-67979](https://patchblox.com/security/data/fix/linux/elsa-2026-67979.md) | Nov 7, 2026 | | Linux | microcode_ctl ol 8 | 4:20260812-1.0.3.el8_10 | [ELSA-2026-65147-0](https://patchblox.com/security/data/fix/linux/elsa-2026-65147-0.md) | Sep 16, 2026 | | Linux | microcode_ctl ol 9 | 4:20260812-1.0.2.el9_8 | [ELSA-2026-68011](https://patchblox.com/security/data/fix/linux/elsa-2026-68011.md) | Nov 7, 2026 | | Linux | microcode_ctl rocky 10 | 4:20260812-0.el10_2 | [RLSA-2026:67979](https://patchblox.com/security/data/fix/linux/rlsa-2026-67979.md) | Sep 17, 2026 | | Linux | microcode_ctl rocky 8 | 4:20260812-1.el8_10 | [RLSA-2026:65147](https://patchblox.com/security/data/fix/linux/rlsa-2026-65147.md) | Sep 9, 2026 | | Linux | microcode_ctl rocky 9 | 4:20260210-1.20260812.1.el9_8 | [RLSA-2026:68011](https://patchblox.com/security/data/fix/linux/rlsa-2026-68011.md) | Sep 17, 2026 | | Linux | ucode-intel opensuse-leap 16.0 | 20260812-160000.1.1 | [OPENSUSE-SU-2026:21736-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21736-1.md) | Sep 2, 2026 | | Linux | ucode-intel sles 15.6 | 20260812-150200.68.1 | [SUSE-SU-2026:4025-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4025-1.md) | Sep 7, 2026 | | Linux | ucode-intel sles 15.7 | 20260812-150200.68.1 | [SUSE-SU-2026:4025-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4025-1.md) | Sep 7, 2026 | | Linux | ucode-intel sles 16.0 | 20260812-160000.1.1 | [SUSE-SU-2026:23602-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23602-1.md) | Sep 21, 2026 | --- Data as of 2026-11-08T06:59:42Z UTC. 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