APPLIED [OEM-5.17, OEM-6.0, OEM-6.1] Re: [SRU Focal,Jammy,Lunar,OEM-6.0,OEM-6.1,OEM-5.17 0/2] CVE-2023-20593

[Thadeu Lima de Souza Cascardo]

On Fri, Aug 04, 2023 at 02:31:41PM +0300, Timo Aaltonen wrote:
> Thadeu Lima de Souza Cascardo kirjoitti 28.7.2023 klo 18.21:
> > [Impact]
> > Use-after-free on register allocation after speculative execution leads
> > to data leak and corruption on AMD Zen2 processors.
> > 
> > [Test case]
> > Public PoC was used to test the fix on 5.15 and 6.2 kernels.
> > 
> > [Backports]
> > Some conflict fixups due to some missing commits were necessary. They were
> > mostly for context adjustment and not any real changes. Except for 5.17,
> > where the MSR definition was not present in the header and was added there.
> > 
> > [Potential regression]
> > This can cause boot issues or WARNings during boot if setting the MSR on
> > unsupported platforms. It can also impact performance or other behavior
> > change due to setting the chicken bit.
> > 
> > Borislav Petkov (AMD) (2):
> >    x86/cpu/amd: Move the errata checking functionality up
> >    x86/cpu/amd: Add a Zenbleed fix
> > 
> >   arch/x86/include/asm/microcode.h     |   1 +
> >   arch/x86/include/asm/microcode_amd.h |   2 +
> >   arch/x86/include/asm/msr-index.h     |   1 +
> >   arch/x86/kernel/cpu/amd.c            | 199 +++++++++++++++++----------
> >   arch/x86/kernel/cpu/common.c         |   2 +
> >   5 files changed, 133 insertions(+), 72 deletions(-)
> > 
> 
> applied to oem kernels, thanks
> 
> -- 
> t
> 

I only find this partially applied on oem-6.1. Can this get fixed?

Thanks.
Cascardo.