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CVE-2020-27777

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.


Affected Software


CPE Name Name Version
linux:linux_kernel linux linux kernel 5.9.5
linux:linux_kernel linux linux kernel 5.4.75
linux:linux_kernel linux linux kernel 4.19.155
linux:linux_kernel linux linux kernel 4.14.204
redhat:enterprise_linux redhat enterprise linux 7.0
redhat:enterprise_linux redhat enterprise linux 6.0
redhat:enterprise_linux redhat enterprise linux 5.0
redhat:enterprise_linux redhat enterprise linux 8.0
redhat:openshift_container_platform redhat openshift container platform 4.5
redhat:openshift_container_platform redhat openshift container platform 4.6
redhat:openshift_container_platform redhat openshift container platform 4.4

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