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.
A flaw was found in the implementation of Intel Advanced Vector Extensions (AVX) where a local authenticated attacker with the ability to execute AVX instructions is able to gather AVX register state from previous AVX executions.
This could allow information disclosure of AVX register state.
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 memory protection in System Management Mode (SMM) and Intel(R) TXT for certain Intel(R) Xeon(R) Processors may allow a privileged user to potentially enable escalation of privilege 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 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.
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