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. (CVE-2020-27777)

Impact

This vulnerability can be exploited to compromise kernel integrity.

cbl_mariner 1

ubuntucve 1

prion 1

redhatcve 1

ibm 3

nvd 1

cve 1

cvelist 1

debiancve 1

openvas 35