The Linux kernel for powerpc has an issue with the Run-Time Abstraction Services (RTAS) interface, allowing root (or CAP_SYS_ADMIN users) in a VM to overwrite some parts of memory, including kernel memory. CREATE(Triage):(User=admin) CVE-2020-27777 (https://nvd.nist.gov/vuln/detail/CVE-2020-27777)
