CVE-2020-27777

CVE Details

Release Date:2020-12-15

Description


A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. On a locked down (usually due to Secure Boot) guest system running on top of PowerVM or KVM hypervisors (pseries platform) a root like local user could use this flaw to further increase their privileges to that of a running kernel.

See more information about CVE-2020-27777 from MITRE CVE dictionary and NIST NVD


CVSS v3.0 metrics


NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score: 6.7 Base Metrics: AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Access Vector: Local network Attack Complexity: Low
Privileges Required: High User Interaction: None
Scope: Unchanged Confidentiality Impact: High
Integrity Impact: High Availability Impact: High

Errata information


PlatformErrataRelease Date
Oracle Linux version 7 (kernel)ELSA-2021-33272021-08-31
Oracle Linux version 8 (kernel)ELSA-2021-43562021-11-16



This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team

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