CVE-2021-47228 x86/ioremap: Map EFI-reserved memory as encrypted for SEV

In the Linux kernel, the following vulnerability has been resolved: x86/ioremap: Map EFI-reserved memory as encrypted for SEV Some drivers require memory that is marked as EFI boot services data. In order for this memory to not be re-used by the kernel after ExitBootServices, efimemreserve is use...

CVE-2021-47228

The Linux kernel contains a vulnerability in the x86/ioremap component where memory marked with the EFI_MEMORY_RUNTIME attribute is not properly mapped as encrypted for SEV guests. This occurs because some drivers require memory marked as EFI boot services data , which is preserved using efi_mem_...

CVE-2021-47228: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: x86/ioremap: Map EFI-reserved memory as encrypted for SEV Some drivers require memory that is marked as EFI boot services data. In order for this memory to not be re-used by the kernel after ExitBootServices, efimemreserve is use...