Intel has released new CPU microcode and published 30 new security advisories as part of their November 2025 Patch Tuesday. Microcode updates are crucial for addressing hardware-level vulnerabilities and improving CPU performance. These updates often target vulnerabilities related to speculative execution, such as Spectre and Meltdown variants. The release of 30 security advisories indicates a comprehensive effort to address a wide range of potential vulnerabilities, highlighting Intel's proactive approach to security. For cybersecurity professionals, the key action is to review these advisories and apply the necessary updates promptly. Understanding the specifics of each advisory can help in assessing the risk and planning appropriate mitigation strategies. Organizations must prioritize applying these updates to protect against potential exploits. The large number of advisories suggests that Intel is addressing multiple vulnerabilities simultaneously, which could significantly impact the cybersecurity landscape. Regular patching and staying informed about hardware-level vulnerabilities are essential for maintaining system security and stability. Cybersecurity professionals should ensure that their systems are updated to protect against emerging threats.

Origin

Origin

It's "Patch Tuesday" and Intel is out with new CPU microcode for Linux users in addition to making public 30 new security advisories that affect a range of Intel products...

Blog com notícias sobre, Linux, Android, Segurança , etc

Barak Gross discovered that some Intel® Xeon® processors with SGX enabled did not properly handle buffer restrictions. A local authenticated user could potentially use this issue to escalate their privileges. (CVE-2025-20053) Avinash Maddy discovered that some Intel® processors did not properly isolate or compartmentalize the stream cache mechanisms. A local authenticated user could potentially use this issue to escalate their privileges. (CVE-2025-20109) Joseph Nuzman discovered that some Intel® Xeon® processors did not properly manage references to active allocate resources. A local authenticated user could potentially use this issue to cause a denial of service (system crash). (CVE-2025-21090) It was discovered that some Intel® Xeon® 6 processors did not properly provide sufficient granularity of access control in the out of band management service module (OOB-MSM). An authenticated user could potentially use this issue to escalate their privileges. (CVE-2025-22839) It was discovered that some Intel® Xeon® 6 Scalable processors did not properly handle a specific sequence of processor instructions, leading to unexpected behavior. A local authenticated user could potentially use this issue to escalate their privileges. (CVE-2025-22840) Joseph Nuzman discovered that some Intel® Xeon® 6 processors with Intel® Trust Domain Extensions (Intel® TDX) did not properly handle overlap between protected memory ranges. A local authenticated user could potentially use this issue to escalate their privileges. (CVE-2025-22889) Avraham Shalev discovered that some Intel® Xeon® processors did not properly provide sufficient control flow management in the Alias Checking Trusted Module (ACTM) firmware. A local authenticated user could potentially use this issue to escalate their privileges. (CVE-2025-24305) Aviv Eisen and Avraham Shalev discovered that some Intel® Xeon® 6 processors when using Intel® SGX or Intel® TDX did not properly protect against out-of-bounds writes in the memory subsystem. A local authenticated user could potentially use this issue to escalate their privileges. (CVE-2025-26403) Aviv Eisen and Avraham Shalev discovered that some Intel® Xeon® 6 processors when using Intel® SGX or Intel® TDX did not properly implement security checks in the DDRIO configuration. A local authenticated user could potentially use this issue to escalate their privileges. (CVE-2025-32086)

Origin

Fixes for critical issues in Intel microcode across multiple Ubuntu releases. Essential updates for privilege escalation risks.

Tech shop blames Corsair OEM BIOS for repeat Core i9 failures in Vengeance i8200 PC It uses a standard ASUS Z790-P motherboard, but with special BIOS that prevents easy microcode update. Repair shop “Matt’s...

Local privileges required to exploit flaw in Ryzen and Epyc CPUs. Some patches available, more on the way AMD will issue a microcode patch for a high-severity vulnerability that could weaken cryptographic keys across Epyc and Ryzen CPUs.…

Local privileges required to exploit flaw in Ryzen and Epyc CPUs. Some patches available, more on the way AMD will issue a microcode patch for a high-severity vulnerability that could weaken cryptographic keys across Epyc and Ryzen CPUs.…

AMD's RDSEED issue with Zen 5 processors that is in the process of being addressed with microcode/BIOS updates is in the interim causing headaches for Arch Linux powered CachyOS that provides optimized binaries for these latest Ryzen processors...