From: "Radim Krčmář" <rkrcmar@redhat.com>
To: Ido Yariv <ido@wizery.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH] KVM: x86: fix wbinvd_dirty_mask use-after-free
Date: Mon, 24 Oct 2016 17:23:26 +0200 [thread overview]
Message-ID: <20161024152325.GD2247@potion> (raw)
In-Reply-To: <1477067997-17845-1-git-send-email-ido@wizery.com>
2016-10-21 12:39-0400, Ido Yariv:
> vcpu->arch.wbinvd_dirty_mask may still be used after freeing it,
> corrupting memory. For example, the following call trace may set a bit
> in an already freed cpu mask:
> kvm_arch_vcpu_load
> vcpu_load
> vmx_free_vcpu_nested
> vmx_free_vcpu
> kvm_arch_vcpu_free
>
> Fix this by deferring freeing of wbinvd_dirty_mask.
>
> Cc: stable@vger.kernel.org
> Signed-off-by: Ido Yariv <ido@wizery.com>
> ---
Applied, thanks.
prev parent reply other threads:[~2016-10-24 15:23 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-21 16:39 [PATCH] KVM: x86: fix wbinvd_dirty_mask use-after-free Ido Yariv
2016-10-24 14:15 ` Paolo Bonzini
2016-10-24 15:23 ` Radim Krčmář [this message]
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