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Root Complex OS Re-Enable

Bulletin ID: AMP-SB-0006

Who is Impacted

Systems that use OS to disable root port.

Potential Impact

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


Low Severity

CVSS Score: 3.6


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


Update SRP to 2.10c

Created At : February 14th 2023, 8:51:10 pm
Last Updated At : August 7th 2023, 4:20:19 pm
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