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From: David Buchanan <d@vidbuchanan.co.uk>
To: Gerd Hoffmann <kraxel@redhat.com>, qemu-devel@nongnu.org
Cc: P J P <ppandit@redhat.com>
Subject: Re: [Qemu-devel] [PATCH v2] vga: stop passing pointers to vga_draw_line* functions
Date: Mon, 9 Oct 2017 12:55:29 +0100	[thread overview]
Message-ID: <e64a628c-3377-f3f5-0646-079a2a175354@vidbuchanan.co.uk> (raw)
In-Reply-To: <20170828122906.18993-1-kraxel@redhat.com>

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I might be mistaken, but I don't think this patch actually fixes
CVE-2017-13672. I tested the latest git repo (last commit 530049bc1d)
against my initial reproducer, and QEMU still segfaults.

I think this is because the actual OOB read occurs inside pixman, which
of course is not affected by this patch. Perhaps bounds checks need to
be applied to the arguments passed into pixman?


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  reply	other threads:[~2017-10-09 11:55 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-28 12:29 [Qemu-devel] [PATCH v2] vga: stop passing pointers to vga_draw_line* functions Gerd Hoffmann
2017-10-09 11:55 ` David Buchanan [this message]
2017-10-09 12:56   ` Gerd Hoffmann
2017-10-09 13:09     ` David Buchanan

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