linux-kernel - Re: CVE-2025-21991: x86/microcode/AMD: Fix out-of-bounds on systems with CPU-less NUMA nodes

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Message-ID: <916e1b593d7dfc8d6286206a6ecc60bdff45a091.camel@oracle.com>
Date: Wed, 4 Jun 2025 10:36:25 +0000
From: Siddh Raman Pant <siddh.raman.pant@...cle.com>
To: "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: CVE-2025-21991: x86/microcode/AMD: Fix out-of-bounds on systems
 with CPU-less NUMA nodes

On Wed, Jun 04 2025 at 15:30:54 +0530, gregkh@...uxfoundation.org
wrote:
> On Wed, Jun 04, 2025 at 09:54:55AM +0000, Siddh Raman Pant wrote:
> > On Wed, Jun 04 2025 at 14:58:03 +0530, gregkh@...uxfoundation.org
> > wrote:
> > > Doesn't "causing corrupted memory when flashing a microcode update" fit
> > > the cve.org definition of a "vulnerabilty"?
> > 
> > This only happens on CPU bring-up so I don't see it getting triggered
> > without already being exploited.
> 
> If you can get the maintainers/developers involved with this change to
> agree, we will be glad to reject this.

Oops, went through it in more detail, you are right.

I should have done my homework better.

Very sorry for the noise,
Siddh

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