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microcode_ctl

Multiple privilege escalation vulnerabilities affecting Intel processors are addressed by a security update to the ucode-intel microcode package. The update fixes improper value and memory range handling in privileged CPU modes, specifically CVE-2025-31936 and CVE-2025-35973. The update is available for SUSE and Red Hat Enterprise Linux distributions and includes microcode releases up to 20260812. These vulnerabilities could allow escalation of privileges in Ring 0 and System Management Mode (SMM).

This security update for the ucode-intel package addresses multiple vulnerabilities in Intel CPU microcode distributed via SUSE and Red Hat Enterprise Linux. The key vulnerabilities include CVE-2025-31936, which involves privilege escalation via improper memory range handling in System Management Mode on Intel Xeon 6 processors, and CVE-2025-35973, which involves privilege escalation in Ring 0 due to improper value handling. The update also resolves functional issues and adds support for new Intel processor platforms. The microcode_ctl package update for Red Hat Enterprise Linux 8 includes these fixes and is rated as having an Important security impact by Red Hat. The vulnerabilities relate to improper handling of privileged CPU modes that could be exploited for privilege escalation.

Detailed information about Red Hat Security Advisory: microcode_ctl security, bug fix, and enhancement update affecting Red Hat Product Security Red Hat. Get re

Red Hat Security Advisory: microcode_ctl security, bug fix, and enhancement update - Live Threat Intelligence - Threat Radar | OffSeq.com

https://access.redhat.com/errata/RHSA-2026:65147

https://access.redhat.com/security/updates/classification/#important

2514104

2514115

RHEL-240770

Canonical URL

SUSE ratings

URL of this CSAF notice

SUSE Bug 1265189

SUSE Bug 1274785

SUSE CVE CVE-2025-31936 page

SUSE CVE CVE-2025-31938 page

SUSE CVE CVE-2025-35973 page

SUSE CVE CVE-2025-35979 page

SUSE CVE CVE-2026-20707 page

SUSE CVE CVE-2026-20713 page

SUSE CVE CVE-2026-20716 page

SUSE CVE CVE-2026-20760 page

SUSE CVE CVE-2026-20901 page

SUSE CVE CVE-2026-20917 page

Security update for ucode-intel

Red Hat has released a security update for the microcode_ctl package addressing three vulnerabilities in UEFI firmware related to improper input validation, insufficient access control granularity, and improper initialization in the OutOfBandXML module. These vulnerabilities affect Red Hat Enterprise Linux 9 and its variants. The update is rated as having a moderate security impact. Users are advised to apply the update as detailed in the Red Hat advisory.

The microcode_ctl package, which provides microcode updates for Intel and AMD processors on Red Hat Enterprise Linux 9, contains three vulnerabilities in UEFI firmware: CVE-2024-28047 (improper input validation), CVE-2024-39279 (insufficient granularity of access control), and CVE-2024-31157 (improper initialization in the OutOfBandXML module). These issues could potentially affect the security of the system's firmware update process. Red Hat has issued a security update to address these vulnerabilities.

Detailed information about Red Hat Security Advisory: microcode_ctl security update affecting Red Hat Product Security Red Hat. Get real-time updates, technical

Red Hat Security Advisory: microcode_ctl security update - Live Threat Intelligence - Threat Radar | OffSeq.com

https://access.redhat.com/errata/RHSA-2025:7043

https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/9.6_release_notes/index

https://access.redhat.com/security/updates/classification/#moderate

2345363

2345381

2345421

RHEL-67336

URL for RHSA-2025:7043

E-Mail link for RHSA-2025:7043

SUSE CVE CVE-2024-28047 page

SUSE CVE CVE-2024-31157 page

SUSE CVE CVE-2024-39279 page

security update for microcode_ctl


Security update for ucode-intelCVE-2025-31936 0 Multiple privilege escalation vulnerabilities affecting Intel processors are addressed by a security update to the ucode-intel microcode package. The update fixes improper value and memory range handling in privileged CPU modes, specifically CVE-2025-31936 and CVE-2025-35973. The update is available for SUSE and Red Hat Enterprise Linux distributions and includes microcode releases up to 20260812. These vulnerabilities could allow escalation of privileges in Ring 0 and System Management Mode (SMM). HighVulnerability#gcve #csaf #cve-2025-31936 Join the discussion	GCVE Database	09/02/2026, 09:34:17 UTC Added: 09/09/2026, 13:30:26 UTC
security update for microcode_ctlCVE-2024-28047 0 Red Hat has released a security update for the microcode_ctl package addressing three vulnerabilities in UEFI firmware related to improper input validation, insufficient access control granularity, and improper initialization in the OutOfBandXML module. These vulnerabilities affect Red Hat Enterprise Linux 9 and its variants. The update is rated as having a moderate security impact. Users are advised to apply the update as detailed in the Red Hat advisory. MediumVulnerability#gcve #csaf #cve-2024-28047 Join the discussion	GCVE Database	05/13/2025, 00:00:00 UTC Added: 08/06/2026, 18:16:43 UTC

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