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

[Timo Aaltonen]

Thadeu Lima de Souza Cascardo kirjoitti 9.8.2023 klo 13.52:
> 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?

hmm, dunno why.. but fixed.

-- 
t