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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2020-12-15T16:57:45

Updated: 2024-08-04T16:25:42.438Z

Reserved: 2020-10-27T00:00:00

Link: CVE-2020-27777

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2020-12-15T17:15:14.333

Modified: 2023-10-05T14:29:57.897

Link: CVE-2020-27777

cve-icon Redhat

Severity : Moderate

Publid Date: 2020-10-08T00:00:00Z

Links: CVE-2020-27777 - Bugzilla