Re: [PATCH v2 bpf-next] bpf: Fix latent unsoundness in and/or/xor value tracking

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On Sat, Apr 13, 2024 at 12:05:18AM +0000, Harishankar Vishwanathan wrote:
> > On Apr 10, 2024, at 7:43 AM, Shung-Hsi Yu <shung-hsi.yu@xxxxxxxx> wrote:
> > On Tue, Apr 09, 2024 at 06:17:05PM +0100, Edward Cree wrote:
> >> I don't feel too strongly about it, and if you or Shung-Hsi still
> >> think, on reflection, that backporting is desirable, then go ahead
> >> and keep the Fixes: tag.
> >> But maybe tweak the description so someone doesn't see "latent
> >> unsoundness" and think they need to CVE and rush this patch out as
> >> a security thing; it's more like hardening.  *shrug*
> >
> > Unfortunately with Linux Kernel's current approach as a CVE Numbering
> > Authority I don't think this can be avoided. Patches with fixes tag will
> > almost certainly get a CVE number assigned (e.g. CVE-2024-26624[1][2]),
> > and we can only dispute[3] after such assignment happend for the CVE to
> > be rejected.
> 
> It seems the best option is to CC the patch to stable@xxxxxxxxxxxxxxx (so
> that it will be backported), and not add the fixes tag (so that no CVE will
> be assigned). Does this seem reasonable? If yes, I’ll proceed with v3.
> I'll also mention that this is a hardening in the commit message.

Sounds good to me. Not 100% certain that this will avoid CVE assignment,
but does seems like the best option.

Shung-Hsi




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