Headline
CVE-2020-27777
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.
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An update for kernel is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2019-14615: kernel: Intel graphics card information leak. * CVE-2020-0427: kernel: out-of-bounds reads in pinctrl subsystem. * CVE-2020-24502: kernel: Improper input validation in some Intel(R) Ethernet E810 Adapter drivers * CVE-2020-24503: kernel: Insufficient access control in some Intel(R) Ethernet E810 Adapter drivers * CVE-2020-24504: kernel: Uncontroll...