Release Date: | 2020-12-15 |
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
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 |
Platform | Errata | Release Date |
Oracle Linux version 7 (kernel) | ELSA-2021-3327 | 2021-08-31 |
Oracle Linux version 8 (kernel) | ELSA-2021-4356 | 2021-11-16 |
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