linux-kernel - Re: [PATCH] KVM: SEV: Save the SEV policy if and only if LAUNCH

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <175798183763.622105.13979061125365252819.b4-ty@google.com>
Date: Mon, 15 Sep 2025 17:25:55 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Sean Christopherson <seanjc@...gle.com>, Paolo Bonzini <pbonzini@...hat.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Tom Lendacky <thomas.lendacky@....com>, Kim Phillips <kim.phillips@....com>
Subject: Re: [PATCH] KVM: SEV: Save the SEV policy if and only if LAUNCH_START succeeds

On Thu, 21 Aug 2025 14:38:41 -0700, Sean Christopherson wrote:
> Wait until LAUNCH_START fully succeeds to set a VM's SEV/SNP policy so
> that KVM doesn't keep a potentially stale policy.  In practice, the issue
> is benign as the policy is only used to detect if the VMSA can be
> decrypted, and the VMSA only needs to be decrypted if LAUNCH_UPDATE and
> thus LAUNCH_START succeeded.
> 
> 
> [...]

Applied to kvm-x86 svm, thanks!

[1/1] KVM: SEV: Save the SEV policy if and only if LAUNCH_START succeeds
      https://github.com/kvm-x86/linux/commit/2f5f8fb9de09

--
https://github.com/kvm-x86/linux/tree/next