A flaw was found in computer hardware of the Intel microprocessors related to the instruction-side TLB (Translation Lookaside Buffer) that caches translations from guest (and host) virtual addresses into physical addresses.

This is a software fix that attempts to prevent exploitation of the hardware through preventing a hacker from creating an exploitable condition

Additional information:

https://access.redhat.com/security/vulnerabilities/ifu-page-mce

Improper access control in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.

Sequence of processor instructions leads to unexpected behavior for some Intel(R) Processors may allow an authenticated user to potentially enable escalation of privilege and/or information disclosure and/or denial of service via local access.

A potential security vulnerability in some Intel(R) Xeon(R) Processors with Intel(R) Software Guard Extensions (SGX) may allow escalation of privilege. Intel is releasing firmware updates to mitigate this potential vulnerability.

References: https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00738.html https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/releases/tag/microcode-20230214

Improper isolation of shared resources in some Intel(R) Processors may allow a privileged user to potentially enable information disclosure via local access.

A flaw was found in hw. In certain processors with Intel's Enhanced Indirect Branch Restricted Speculation (eIBRS) capabilities, soon after VM exit or IBPB command event, the linear address following the most recent near CALL instruction prior to a VM exit may be used as the Return Stack Buffer (RSB) prediction.

Out-of-bounds write in the BIOS authenticated code module for some Intel(R) Processors may allow a privileged user to potentially enable aescalation of privilege via local access.

Improper access control in the BIOS authenticated code module for some Intel(R) Processors may allow a privileged user to potentially enable aescalation of privilege via local access.

Improper input validation in the firmware for some Intel(R) Processors may allow an authenticated user to potentially enable an escalation of privilege via local access.

Improper input validation in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable aescalation of privilege via local access.

Unchecked return value in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable information disclosure via local access.

Improper initialization in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via physical access.

Improper access control in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via physical access.

Improper initialization in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via physical access.

Out-of-bounds read in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable an escalation of privilege via local access.

Pointer issues in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable an escalation of privilege via local access.

Out-of-bounds write in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable an escalation of privilege via local access.

Improper initialization in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable information disclosure via local access.

Improper access control in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.

Exposure of resource to wrong sphere in BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable information disclosure via local access.

Improper access control in some 3rd Generation Intel(R) Xeon(R) Scalable processors may allow a privileged user to potentially enable information disclosure via local access.

Last updated 24 July 2024

Insufficient control flow management in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable denial of service via local access.

Configuration of SPI Flash in platforms based on multiple Intel platforms allow a local attacker to alter the behavior of the SPI flash potentially leading to a Denial of Service.

Improper conditions check in multiple Intel® Processors may allow an authenticated user to potentially enable partial escalation of privilege, denial of service and/or information disclosure via local access.

Insufficient access control in system firmware for Intel(R) Xeon(R) Scalable Processors, 2nd Generation Intel(R) Xeon(R) Scalable Processors and Intel(R) Xeon(R) Processors D Family may allow a privileged user to potentially enable escalation of privilege, denial of service and/or information disclosure via local access.

Insufficient input validation in system firmware for Intel(R) Xeon(R) Scalable Processors, Intel(R) Xeon(R) Processors D Family, Intel(R) Xeon(R) Processors E5 v4 Family, Intel(R) Xeon(R) Processors E7 v4 Family and Intel(R) Atom(R) processor C Series may allow a privileged user to potentially enable escalation of privilege, denial of service and/or information disclosure via local access.

Insufficient memory protection in Intel(R) TXT for certain Intel(R) Core Processors and Intel(R) Xeon(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.

Insufficient access control in silicon reference firmware for Intel(R) Xeon(R) Scalable Processor, Intel(R) Xeon(R) Processor D Family may allow a privileged user to potentially enable escalation of privilege and/or denial of service via local access.

Buffer overflow vulnerability in system firmware for Intel(R) Xeon(R) Processor D Family, Intel(R) Xeon(R) Scalable Processor, Intel(R) Server Board, Intel(R) Server System and Intel(R) Compute Module may allow a privileged user to potentially enable escalation of privilege and/or denial of service via local access.