Hi, this website uses essential cookies to ensure its proper operation, analytical cookies to improve its functionality, and tracking cookies to understand how you interact with it. The non-essential cookies will be set only after consent.

Name

These cookies allow us and our third-party service providers to recognize and count the number of visitors and to see how visitors move around our website when they are using it. This helps us improve how our website works by, for example, ensuring that users can easily find what they need on our website. These cookies generate aggregate statistics that are not associated with an individualized profile.

Performance and Analytics cookies

Our website requires the use of these cookies to properly operate or provide necessary functions relating to the services you request. They include, for example, cookies enabling us to track your preferences and allow third party embed functionality.

Strictly necessary cookies

With up to 192 cores,  AmpereOne® is the next generation of Cloud Native Processors for sustainable compute.

AmpereOne® Product Brief

Processors

Partner Ecosystem

Product Security

Where to Try

Products

A Game-Changer for Efficient, Scalable Compute, and AI Workloads

AmpereOne®

Solutions Center

Artificial Intelligence

ARM Native Apps

Data Analytics

Edge and Embedded

Media Services

Storage

Web Services

Solutions

Video Recaps of Ampere’s 2024 Developer Summit

Blog

Developer Center

Design

Build

Deploy

Power Your AI

Working with Open Source

Ampere Ready Software

Community Forum

Subscribe to Newsletter

Developers

Customer Connect

Help

Support

ZEISS Demonstrates the Power of Scalable Workflows with Ampere® Altra® and SpinKube

Developer Story

Blogs

Case Studies

Events

Webinars

YouTube

Resource Library

Resources

Democratizing Scalable and Sustainable Compute

Engineering AI’s Future:

About Us

Leadership Team

Newsroom

Careers

Contact Us

Contact Sales

Company

## Root Complex OS Re-Enable
**Bulletin ID:** AMP-SB-0006      
[CVE-2022-46892](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-46892)

### Who is Impacted

Systems that use OS to disable root port.
### Potential Impact

Depending on platform configuration, reenabling root ports may provide unintended access.

### Severity:
Low Severity

CVSS Score: 3.6

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L

### Problem Statement and Impact

A Root complex is typically disabled during boot via the BIOS. However, the OS can overwrite the DSDT ACPI table to reinitialize the Root Complex. Reported by Oracle and discovered by internal Oracle security researcher Hugo Magalhaes.

### Fixed in

SRP 2.10c
 
### Affected Products

Ampere® Altra® and Ampere® Altra®Max

### Recommendations

Update SRP to 2.10c

Root Complex OS Re-Enable. Systems that use OS to disable root port. Depending on platform configuration, re-enabling root ports may provide unintended access.

Root Complex OS Re-Enable

Ampere Computing Microprocessors for greater efficiency