Re: Linux kernel: powerpc: RTAS calls can be used to compromise kernel integrity
flat view
From: Andrew Donnellan <hidden>
Date: 2020-11-23 14:44:34
On 9/10/20 12:20 pm, Andrew Donnellan wrote:
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. This issue impacts guests running on top of PowerVM or KVM hypervisors (pseries platform), and does *not* impact bare-metal machines (powernv platform).
CVE-2020-27777 has been assigned. -- Andrew Donnellan OzLabs, ADL Canberra ajd@linux.ibm.com IBM Australia Limited