hw: cpu: Intel: Post-barrier Return Stack Buffer Predictions

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...

AMD Graphics Driver Vulnerabilities – November 2022

Bulletin ID: AMD-SB-1029 Potential Impact: Varies by CVE, see descriptions below Severity: Varies by CVE, see descriptions below Summary AMD received reports of vulnerabilities potentially affecting some AMD Graphics products. Refer to the CVE Details section for information about each CVE. CVE...

IBPB and Return Stack Buffer Interactions

Bulletin ID: AMD-SB-1040 Potential Impact: Information Disclosure Severity: Medium Summary AMD is aware of a potential vulnerability affecting AMD CPUs where the OS relies on IBPB to flush the return address predictor. This may allow for CVE-2017-5715 previously known as Spectre Variant 2 attacks...

2022.3 IPU – BIOS Advisory

Summary: Potential security vulnerabilities in the BIOS firmware for some Intel® Processors may allow escalation of privilege. Intel is releasing firmware updates to mitigate these potential vulnerabilities. Vulnerability Details: CVEID: CVE-2022-26006 Description: Improper input validation in th...

HPESBHF04377 rev.1 - Certain HPE ProLiant DL/ML Servers Using Certain Intel Processor BIOS, INTEL-SA-00610, 2022.3 IPU – Intel Chipset Firmware Advisory, Multiple Vulnerabilities

Potential Security Impact: Local: Denial of Service DoS, Escalation of Privilege; Remote: Denial of Service DoS, Escalation of Privilege SUPPORTED SOFTWARE VERSIONS: ONLY impacted versions are listed. HPE ProLiant ML30 Gen10 Plus server - Prior to SPSE306.00.03.204.0, CSME 15.0.42 HPE ProLiant DL...

Amazon Linux 2022 : bpftool, kernel, kernel-devel (ALAS2022-2022-185)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2022-2022-185 advisory. A flaw was found in the Linux kernel. The existing KVM SEV API has a vulnerability that allows a non-root host user-level application to crash the host kernel by creating a confidential guest V...

hw: cpu: AMD: Branch Type Confusion (non-retbleed)

A flaw was found in hw. Aliases in the branch predictor may cause some AMD processors to predict the wrong branch type, potentially leading to information disclosure...

hw: cpu: AMD: RetBleed Arbitrary Speculative Code Execution with Return Instructions

A flaw was found in hw. Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution under certain microarchitecture-dependent conditions...

hw: cpu: Intel: Post-barrier Return Stack Buffer Predictions

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...

hw: cpu: Intel: information disclosure via local access

A flaw was found in hw. The unprotected alternative channel of return branch target prediction in some IntelR Processors may allow an authorized user to enable information disclosure via local access...

hw: cpu: Intel: information disclosure via local access

A flaw was found in hw. The unprotected alternative channel of return branch target prediction in some IntelR Processors may allow an authorized user to enable information disclosure via local access...

hw: cpu: Intel: RetBleed Arbitrary Speculative Code Execution with Return Instructions

A flaw was found in hw. Non-transparent sharing of branch predictor targets between contexts in some IntelR processors may potentially allow an authorized user to enable information disclosure via local access...

hw: cpu: Intel: Post-barrier Return Stack Buffer Predictions

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...

microcode_ctl bug fix and enhancement update

An update is available for microcodectl. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The microcodectl packages provide microcode updates for Intel processors...

hw: cpu: incomplete clean-up in specific special register write operations (aka DRPW)

A flaw was found in hw. Incomplete cleanup in specific special register write operations for some Intel® Processors may allow an authenticated user to enable information disclosure via local access...

hw: cpu: incomplete clean-up of microarchitectural fill buffers (aka SBDS)

A flaw was found in hw. Incomplete cleanup of microarchitectural fill buffers on some Intel® Processors may allow an authenticated user to enable information disclosure via local access...

hw: cpu: incomplete clean-up in specific special register write operations (aka DRPW)

A flaw was found in hw. Incomplete cleanup in specific special register write operations for some Intel® Processors may allow an authenticated user to enable information disclosure via local access...

hw: cpu: incomplete clean-up of multi-core shared buffers (aka SBDR)

A flaw was found in hw. Incomplete cleanup of multi-core shared buffers for some Intel® Processors may allow an authenticated user to enable information disclosure via local access...

hw: cpu: incomplete clean-up of microarchitectural fill buffers (aka SBDS)

A flaw was found in hw. Incomplete cleanup of microarchitectural fill buffers on some Intel® Processors may allow an authenticated user to enable information disclosure via local access...

Ubuntu 20.04 LTS : Linux kernel (Azure CVM) vulnerabilities (USN-5706-1)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5706-1 advisory. It was discovered that the BPF verifier in the Linux kernel did not properly handle internal data structures. A local attacker could use this to expose...