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Re: [PATCH v2] hw/nvme: fix CVE-2021-3929
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From: |
Klaus Jensen |
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Subject: |
Re: [PATCH v2] hw/nvme: fix CVE-2021-3929 |
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Date: |
Mon, 24 Jan 2022 12:19:54 +0100 |
On Jan 21 07:32, Klaus Jensen wrote:
> From: Klaus Jensen <k.jensen@samsung.com>
>
> This fixes CVE-2021-3929 "locally" by denying DMA to the iomem of the
> device itself. This still allows DMA to MMIO regions of other devices
> (e.g. doing P2P DMA to the controller memory buffer of another NVMe
> device).
>
> Fixes: CVE-2021-3929
> Reported-by: Qiuhao Li <Qiuhao.Li@outlook.com>
> Reviewed-by: Keith Busch <kbusch@kernel.org>
> Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
> ---
> hw/nvme/ctrl.c | 22 ++++++++++++++++++++++
> 1 file changed, 22 insertions(+)
>
Applied to nvme-next.
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