Re: [Qemu-devel] [PATCH] cirrus: fix oob access issue (CVE-2017-TODO)

[Gerd Hoffmann <kraxel@redhat.com>]

On Mi, 2017-01-25 at 08:07 +0100, Gerd Hoffmann wrote:
> From: Li Qiang <liqiang6-s@360.cn>
> 
> When doing bitblt copy in backward mode, we should minus the
> blt width first just like the adding in the forward mode. This
> can avoid the oob access of the front of vga's vram.
> 
> Signed-off-by: Li Qiang <liqiang6-s@360.cn>
> Message-id: 5887254f.863a240a.2c122.5500@mx.google.com
> 
> { kraxel: with backward blits (negative pitch) addr is the topmost
>           address, so check it as-is against vram size ]
> 
> Cc: qemu-stable@nongnu.org
> Cc: P J P <ppandit@redhat.com>
> Cc: Laszlo Ersek <lersek@redhat.com>
> Cc: Paolo Bonzini <pbonzini@redhat.com>
> Cc: Wolfgang Bumiller <w.bumiller@proxmox.com>
> Fixes: d3532a0db02296e687711b8cdc7791924efccea0 (CVE-2014-8106)
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

For testers:  All pending cirrus fixes are now pushed to:

  git://git.kraxel.org/qemu queue/vga

Gerd Hoffmann (1):
      cirrus: fix blit address mask handling

Li Qiang (1):
      cirrus: fix oob access issue (CVE-2017-TODO)

Wolfgang Bumiller (1):
      cirrus: allow zero source pitch in pattern fill rops

cheers,
  Gerd