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.
Published: 2020-12-15
Score: 6.7 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2020-20281 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.
Ubuntu USN Ubuntu USN USN-4679-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-4680-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-4708-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-4751-1 Linux kernel vulnerabilities
History

No history.

Subscriptions

Linux Linux Kernel
Redhat Enterprise Linux Openshift Container Platform
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

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

Reserved: 2020-10-27T00:00:00.000Z

Link: CVE-2020-27777

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

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

Modified: 2024-11-21T05:21:48.973

Link: CVE-2020-27777

cve-icon Redhat

Severity : Moderate

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

Links: CVE-2020-27777 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses