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From: Marc Zyngier <maz@kernel.org>
To: Dinghao Liu <dinghao.liu@zju.edu.cn>
Cc: "Toan Le" <toan@os.amperecomputing.com>,
	"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
	"Krzysztof Wilczyński" <kw@linux.com>,
	"Rob Herring" <robh@kernel.org>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Duc Dang" <dhdang@apm.com>, "Tanmay Inamdar" <tinamdar@apm.com>,
	linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] PCI: xgene-msi: Fix a potential UAF in xgene_msi_probe
Date: Fri, 29 Sep 2023 10:14:18 +0100	[thread overview]
Message-ID: <87jzs9mjdh.wl-maz@kernel.org> (raw)
In-Reply-To: <20230926025936.7115-1-dinghao.liu@zju.edu.cn>

On Tue, 26 Sep 2023 03:59:36 +0100,
Dinghao Liu <dinghao.liu@zju.edu.cn> wrote:
> 
> xgene_allocate_domains() will call irq_domain_remove() to free
> msi->inner_domain on failure. However, its caller, xgene_msi_probe(),
> will also call irq_domain_remove() through xgene_msi_remove() on the
> same failure, which may lead to a use-after-free. Remove the first
> irq_domain_remove() and let xgene_free_domains() cleanup domains.
> 
> Fixes: dcd19de36775 ("PCI: xgene: Add APM X-Gene v1 PCIe MSI/MSIX termination driver")
> Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
> ---
> 
> Changelog:
> 
> v2: -Remove irq_domain_remove() instead of nulling msi_domain.

Unfortunately, your email doesn't indicate this is v2.

	M.

-- 
Without deviation from the norm, progress is not possible.

WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <maz@kernel.org>
To: Dinghao Liu <dinghao.liu@zju.edu.cn>
Cc: "Toan Le" <toan@os.amperecomputing.com>,
	"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
	"Krzysztof Wilczyński" <kw@linux.com>,
	"Rob Herring" <robh@kernel.org>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Duc Dang" <dhdang@apm.com>, "Tanmay Inamdar" <tinamdar@apm.com>,
	linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] PCI: xgene-msi: Fix a potential UAF in xgene_msi_probe
Date: Fri, 29 Sep 2023 10:14:18 +0100	[thread overview]
Message-ID: <87jzs9mjdh.wl-maz@kernel.org> (raw)
In-Reply-To: <20230926025936.7115-1-dinghao.liu@zju.edu.cn>

On Tue, 26 Sep 2023 03:59:36 +0100,
Dinghao Liu <dinghao.liu@zju.edu.cn> wrote:
> 
> xgene_allocate_domains() will call irq_domain_remove() to free
> msi->inner_domain on failure. However, its caller, xgene_msi_probe(),
> will also call irq_domain_remove() through xgene_msi_remove() on the
> same failure, which may lead to a use-after-free. Remove the first
> irq_domain_remove() and let xgene_free_domains() cleanup domains.
> 
> Fixes: dcd19de36775 ("PCI: xgene: Add APM X-Gene v1 PCIe MSI/MSIX termination driver")
> Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
> ---
> 
> Changelog:
> 
> v2: -Remove irq_domain_remove() instead of nulling msi_domain.

Unfortunately, your email doesn't indicate this is v2.

	M.

-- 
Without deviation from the norm, progress is not possible.

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2023-09-29  9:14 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-26  2:59 [PATCH] PCI: xgene-msi: Fix a potential UAF in xgene_msi_probe Dinghao Liu
2023-09-26  2:59 ` Dinghao Liu
2023-09-29  9:14 ` Marc Zyngier [this message]
2023-09-29  9:14   ` Marc Zyngier
2023-09-30  9:56   ` dinghao.liu
2023-09-30  9:56     ` dinghao.liu
  -- strict thread matches above, loose matches on Subject: below --
2023-09-25  6:21 Dinghao Liu
2023-09-25  6:21 ` Dinghao Liu
2023-09-25  9:40 ` Marc Zyngier
2023-09-25  9:40   ` Marc Zyngier
2023-09-26  2:21   ` dinghao.liu
2023-09-26  2:21     ` dinghao.liu

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