Rapid7 Vulnerability & Exploit Database

Alma Linux: CVE-2020-27777: Moderate: kernel security, bug fix, and enhancement update (ALSA-2021-4356)

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Alma Linux: CVE-2020-27777: Moderate: kernel security, bug fix, and enhancement update (ALSA-2021-4356)

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
12/15/2020
Created
05/05/2022
Added
05/04/2022
Modified
05/13/2022

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.

Solution(s)

  • alma-upgrade-kernel-tools-libs-devel

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