On Fri, Apr 19, 2024 at 11:21:46AM -0700, Adam Dunlap wrote:
> Ensure that when a #VC exception happens, the instruction at the
> instruction pointer matches the instruction that is expected given the
> error code. This is to mitigate the ahoi WeSee attack [1] that could
> allow hypervisors to breach integrity and confidentiality of the
> firmware by maliciously injecting interrupts. This change is a
> translated version of a linux patch e3ef461af35a ("x86/sev: Harden #VC
> instruction emulation somewhat")
>
> [1] https://ahoi-attacks.github.io/wesee/
>
> Cc: Borislav Petkov (AMD) <b...@alien8.de>
> Cc: Tom Lendacky <thomas.lenda...@amd.com>
> Signed-off-by: Adam Dunlap <acdun...@google.com>
Reviewed-by: Gerd Hoffmann <kra...@redhat.com>
take care,
Gerd
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