vulnerability

Huawei EulerOS: CVE-2020-27777: kernel security update

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
Dec 15, 2020
Added
Feb 22, 2021
Modified
Aug 13, 2025

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.

Solutions

huawei-euleros-2_0_sp2-upgrade-kernelhuawei-euleros-2_0_sp2-upgrade-kernel-debughuawei-euleros-2_0_sp2-upgrade-kernel-debug-develhuawei-euleros-2_0_sp2-upgrade-kernel-debuginfohuawei-euleros-2_0_sp2-upgrade-kernel-debuginfo-common-x86_64huawei-euleros-2_0_sp2-upgrade-kernel-develhuawei-euleros-2_0_sp2-upgrade-kernel-headershuawei-euleros-2_0_sp2-upgrade-kernel-toolshuawei-euleros-2_0_sp2-upgrade-kernel-tools-libshuawei-euleros-2_0_sp2-upgrade-perfhuawei-euleros-2_0_sp2-upgrade-python-perf
Title
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