From: Fiona Ebner <f.ebner@proxmox.com>
To: John Snow <jsnow@redhat.com>, Niklas Cassel <niklas.cassel@wdc.com>
Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org,
Simon Rowe <simon.rowe@nutanix.com>,
Felipe Franciosi <felipe@nutanix.com>
Subject: Re: [PATCH 1/1] hw/ide/core: terminate in-flight DMA on IDE bus reset
Date: Tue, 26 Sep 2023 09:11:41 +0200 [thread overview]
Message-ID: <7658d927-1d05-8f2d-9739-d1db692bee72@proxmox.com> (raw)
In-Reply-To: <CAFn=p-YL_hmnrFY9hhuMgMkV4hL3dojMMWUdG9=DBGYuxi_TUw@mail.gmail.com>
Am 25.09.23 um 21:53 schrieb John Snow:
> On Thu, Sep 21, 2023 at 12:07 PM Simon Rowe <simon.rowe@nutanix.com> wrote:
>>
>> When an IDE controller is reset, its internal state is being cleared
>> before any outstanding I/O is cancelled. If a response to DMA is
>> received in this window, the aio callback will incorrectly continue
>> with the next part of the transfer (now using sector 0 from
>> the cleared controller state).
>
> Eugh, yikes. It feels like we should fix the cancellation ...
Please note that there already is a patch for that on the list:
https://lists.nongnu.org/archive/html/qemu-devel/2023-09/msg01011.html
Best Regards,
Fiona
next prev parent reply other threads:[~2023-09-26 7:13 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-21 16:07 [PATCH 0/1] CVE-2023-5088 Simon Rowe
2023-09-21 16:07 ` [PATCH 1/1] hw/ide/core: terminate in-flight DMA on IDE bus reset Simon Rowe
2023-09-25 19:53 ` John Snow
2023-09-26 7:11 ` Fiona Ebner [this message]
2023-09-26 14:45 ` John Snow
2023-09-28 11:23 ` Fiona Ebner
2023-10-02 9:08 ` Simon Rowe
2023-10-02 22:59 ` John Snow
2023-10-03 12:46 ` Simon Rowe
2023-10-03 14:06 ` Niklas Cassel
2023-10-03 17:05 ` John Snow
2023-10-04 7:51 ` Simon Rowe
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