From: Alexander Popov <alex.popov@linux.com>
To: John Snow <jsnow@redhat.com>,
qemu-block@nongnu.org, qemu-devel@nongnu.org,
qemu-stable@nongnu.org, mst@redhat.com, pmatouse@redhat.com,
sstabellini@kernel.org, mdroth@linux.vnet.ibm.com,
pjp@redhat.com
Subject: Re: [Qemu-devel] [QEMU-SECURITY] ide: fix assertion in ide_dma_cb() to prevent qemu DoS from quest
Date: Mon, 15 Jul 2019 14:24:02 +0300 [thread overview]
Message-ID: <0bce1e99-fb98-6354-9426-391a3e9363f1@linux.com> (raw)
In-Reply-To: <1562335669-10127-1-git-send-email-alex.popov@linux.com>
On 05.07.2019 17:07, Alexander Popov wrote:
> This assertion was introduced in the commit a718978ed58a in July 2015.
> It implies that the size of successful DMA transfers handled in
> ide_dma_cb() should be multiple of 512 (the size of a sector).
>
> But guest systems can initiate DMA transfers that don't fit this
> requirement. Let's improve the assertion to prevent qemu DoS from quests.
Hello!
Just a friendly ping.
Could you have a look at this patch?
Best regards,
Alexander
next prev parent reply other threads:[~2019-07-15 11:24 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-05 14:07 [Qemu-devel] [QEMU-SECURITY] ide: fix assertion in ide_dma_cb() to prevent qemu DoS from quest Alexander Popov
2019-07-05 14:13 ` Alexander Popov
2019-07-15 11:24 ` Alexander Popov [this message]
2019-07-16 11:25 ` [Qemu-devel] [Qemu-block] " Kevin Wolf
2019-07-16 14:57 ` John Snow
2019-07-16 16:18 ` P J P
2019-07-26 0:25 ` [Qemu-devel] " John Snow
2019-07-26 21:09 ` Alexander Popov
2019-11-06 12:05 ` Michael S. Tsirkin
2019-11-06 22:05 ` Alexander Popov
2019-11-14 17:31 ` Alexander Popov
2019-11-06 10:17 ` Alexander Popov
2019-11-06 12:08 ` Michael S. Tsirkin
2019-11-06 22:01 ` Alexander Popov
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